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Serial Match

Summary:

Dean Winchester didn’t expect much when he signed up for a dating service that matches people based on their search history. As a crime writer, his results were bound to look suspicious—stab wounds, poisons, how long it takes to bleed out. Hardly first-date material.

But when he meets Castiel Novak, Dean finds someone who not only keeps up with his morbid curiosity, but answers questions a little too precisely. Between banter, whiskey, and sparks that burn too hot, Dean starts to wonder if his perfect match is hiding something darker than he imagined.

Notes:

(See the end of the work for notes.)

Work Text:

Dean never should’ve signed up for the app. He knows that. He isn’t lonely—not really. Not desperate enough to hand his search history over to some faceless algorithm, let it rifle through all the weird, dark rabbit holes he’s gone down in the name of research. But it was either that, or one more Friday night at the bar pretending he wanted something more than a burger and a whiskey.

So yeah, maybe he clicked submit and let his browsing history speak for itself. How long until blood loss causes unconsciousness? Best poisons for slow death. Stab wound survival rate. Perfectly innocent—for a crime novelist.

He figured the system would spit him back out with no matches. Maybe someone equally morbid who Googled ‘how to hide a body’ for a college prank, tops. What he didn’t expect was a match. A good one at that.

The profile was barebones. Castiel. Thirty-four. Accountant. Likes bees. The profile only had one grainy photo and that little icon glowing bright blue beside his name—most compatible. Still, it felt enticing. Dangerous, even.

Dean should’ve laughed, should’ve deleted the app, and gone back to his half-finished draft. Instead, he messaged the man and now here he is—sitting at a tiny corner table in a bar that smells like stale beer and fried onions, checking his watch every other minute, trying not to look like a guy waiting on a date he already regrets.

When the door finally opens, Dean damn near forgets how to breathe.

The man is tall, captivating as he strides confidently into the bar, his raven hair a twisted-up mess like he’s run his hands through it one too many times. A trench coat in summer…weird. Eyes sharp enough to cut through the dim light of the bar, and lock—immediately, unnervingly—on Dean.

His stomach drops…or maybe flips. It’s hard to tell.

_________________________________

Castiel spots him at once. The writer looks younger than his profile picture, but the scattering of freckles across his face and those brilliant green eyes are unmistakable. Dean. Thirty-two, published author. His date’s body is loose, where Castiel’s is always taut; a restless energy living in his shoulders, his hands. Dean smiles—hesitant, but real—as Castiel slides into the booth across from him.

“Hello, Dean,” Castiel greets, voice flat, testing the name on his tongue.

“Cas, right?” His date asks. Dean leans forward on his elbows, grass green eyes glinting with amusement.

“Nicknames already? Someone moves fast…” Castiel notes, watching for his reaction.

Dean chuckles, eyes moving to the waitress as she approaches, dropping their menus in front of them. They sit ignored while the conversation continues.

Dean speaks first, “So. This whole thing…” gesturing between the two of them, “…dating based on our ’search history compatibility.’ Kinda creepy, don’t you think?”

Castiel tilts his head. “Seemingly accurate, though. We did match…”

Dean snorts, shrugging as he answers. “Guess so. Mine probably makes me look like a psychopath. Half the stuff I Google would land me on an FBI watchlist.”

Leaning in, his intrigue rises. “Like what?” He asks, curiously.

Dean grins, mischief sparking in his golden greens. “Metaphorically speaking, if you were to kill someone, how would you do it?”

Castiel doesn’t hesitate. “Ligature strangulation. Reliable. Quiet. No mess.”

Dean blinks, letting out a low whistle. “Damn. Okay, that was fast. Thought you’d joke around a little first.”

“I don’t make many jokes,” Castiel replies, sipping his water. He doesn’t miss the way Dean’s pulse jumps, visible in his throat. “Not on purpose at least.”

Dean leans closer, lowering his voice like they’re conspiring. “Air shot between the toes. Tiny bubble travels to the heart. Looks like a heart attack. No one ever checks.”

Castiel inhales sharply before he can stop himself. The sound is small, but he can tell Dean catches it. Of course he does.

His grin widens, shaky but brilliant. “What? Too much?”

“No,” Castiel admits, watching him with new intensity. “Not too much at all.”

Dean’s grin lingers, boyish and sharp all at once, like he’s daring Castiel to flinch.
He doesn’t. Instead, he watches the way the man’s fingers tap against the table, restless, alive. The way he leans in when he speaks, as though the space between them is already too much.

Dean clears his throat. “Okay, fine. Your turn. Hypothetically—if someone were stabbed in the gut, how long would it take for them to die?”

“Anywhere from two to thirty minutes,” Castiel answers. His voice is calm, certain. “It depends on the organ damage. Whether you nicked a major artery…and whether anyone bothers to help.”

Dean goes still. Not quite horrified, but thoughtful, like he’s storing it away for later. Then he nods, slowly. “That tracks.” His hand brushes against his pocket. For a wild second, Castiel imagines him pulling out a ring right there and then, ridiculous and earnest. Instead, Dean leans back, giving a crooked smile. “You’re either very committed to realism, or you’ve thought about this way too much.”

“I’ve thought about it,” Castiel admits, simply. 

Dean laughs, low and warm. “Guess that makes two of us.”

For the first time in years, Castiel feels it—that subtle click in his chest. Recognition. The sense of standing in front of someone who doesn’t just hear him, but meets him in the same dark space and doesn’t look away.

Dean props his chin on his hand, studying him with bright curiosity as he pins him with his evergreen gaze. “So, Cas. You always this honest on first dates?”

“Yes.” Castiel’s mouth curves before he can stop it. Not quite a smile, but close. “Don’t you appreciate honesty?”

Dean snorts, but his gaze softens. “Yeah. I do.”

This could be dangerous; it could be love at first sight. Insanity at best. It doesn’t matter, Castiel’s already in too deep to walk away from this captivating man. 

____________________________

Dean tries not to stare, but hell, how could he not? The guy just admitted he’s ‘thought about it,’ like that’s the most normal sentence in the world. And he looks so damn serious—steady gaze, calm voice, like the word hypothetical never even registered. Wayyy too intense for an accountant, that’s for damn sure.

Most people would’ve laughed. Brushed it off, maybe even excused themselves to the bathroom, with no intention of coming back. Dean’s had dates disappear on him for a lot less. He pushes the memory of Lisa and his long monologue about body decomposition that sent her running for the hills. But Cas? He speaks as though it’s just an everyday fact, plain and simple…and for some reason Dean finds himself leaning in closer.

“You know,” he says, dropping his voice, “for a guy who doesn’t joke, you’re really good at making me wanna laugh.”

Cas tilts his head, baby blues brimming with curiosity. “Why?”

Dean shrugs, grinning despite himself. “Because you’re dead serious about all this, and here I am thinking—finally. Someone who doesn’t roll their eyes when I talk about stab wounds.”

That gets him something. Not a smile exactly, but the corner of Cas’ mouth shifts, like a shadow of one, and those sapphires blaze for a moment. There and gone. It hits Dean square in the chest.

Shit.

Drumming his fingers on the table to distract himself, he asks, “So what do you do, anyway? Profession-wise. Your profile said accounting…?”

Cas doesn’t look away, ceruleans intensifying as he responds, “I work alone.”

Dean huffs out a laugh. “That’s ominous.”

“It’s honest,” Cas shrugs.

Dean feels it—like a jolt through the ribcage. He can’t decide if it’s attraction, fascination, or the dawning realization that he should absolutely be worried. Maybe all three.

But when Cas studies him like that, ocean eyes sharp and unblinking, Dean thinks he’d stay in this booth all night just to keep the conversation going. This could be trouble…

The waitress comes back to check on them, but Dean waves her off before she can ask about food. He hasn’t even looked at the menu, and judging by Cas’ unwavering gaze, he hasn’t either.

“So,” Dean says, fiddling with his glass, “the app matched us based on our searches, right? Guess I should’ve asked what yours looked like before agreeing to meet.”

Cas doesn’t blink, stating the obvious without reservation, “I would imagine it would have to be similar to yours.

Dean chuckles nervously. “That’s comforting…or terrifying. Haven’t decided yet.”

Cas doesn’t answer, looking at him like he’s waiting for Dean to figure it out himself. Maybe Dean doesn’t want to. Not yet.

Instead, he leans back in the booth, stretching his legs until his boot-clad foot knocks against Cas’ under the table. “I’ll be straight with you. I only signed up as a joke. Research for a book, mostly. I wasn’t expecting an actual match.”

“Neither was I,” Cas admits, tone flat, but something flickers in his baby blues, quick and sharp.

Dean grins, covering the twist in his gut. “Guess we’re both in uncharted territory…”

They talk a little longer—about writing, their families, past failed dates, and nothing at all. Dean doesn’t notice the hours slide by until the bar thins out around them. Cas never checks the time, never fidgets. He sits there, watching Dean like there’s no one else in the world worth paying attention to.

By the time they stand to leave, his body is humming with restless energy. Cas holds the door on the way out, the night air hitting cool against Dean's skin through his flannel. He pulls on his worn leather jacket to brace himself against the chill. The buzz of traffic rumbles low in the distance as Cas falls into step beside him without a word.

“I’m guessing this is the part where I say I had a nice time,” Dean says, shoving his hands in his pockets. 

“Did you?” Cas asks, full attention remaining on him as they walk.

Dean glances over, and hell, those ceruleans could pin a man to the concrete. He swallows, fighting the sudden dryness in his mouth. “Yeah. I did.”

Cas nods once, like Dean’s answer is all he needed.

He thinks, not for the first time tonight, what the hell am I getting myself into?

But it doesn’t stop him from walking beside Cas like there’s nowhere else he’d rather be. Yup, I’m in trouble.

They reach the corner where the Impala’s parked. He should say goodnight—he knows that. Shake hands, maybe promise to text later or meet up another night, leave it neat. Normal. But ‘normal’ has never been Dean’s style.

He hesitates, scrubbing a hand over the back of his neck. “Listen…I don’t usually do this on a first date.”

Cas tilts his head, ocean eyes squinting adorably as he asks, “Do what?”

Dean’s nerves bubble in his chest. It’s been a while, and he’s more than a little rusty. He laughs under his breath, “Invite a guy back to my place.”

Cas studies him, silent long enough that Dean starts to regret opening his mouth. Finally, he speaks, asking calmly, “Why not?”

Dean blinks. “Why not—what? Why not invite you?”

“Yes.” Cas doesn’t break his intense eye contact, practically melting him on the spot. “You want to.”

Dean lets out a shaky chuckle, trying not to appear as affected as he is. “You’re real confident, you know that?”

Cas shrugs one shoulder, trench coat shifting with the movement. “I don’t see the point in ‘beating around the bush,’ as they say. Honesty is the best policy.”

The real-life quotes somehow make him more attractive. Nerdy little guy, huh?

“Yeah,” he says finally, clearing his throat. “Guess it is…”

He jingles his keys, gesturing toward Baby. “Come on then. My place isn’t far.”

Cas nods once, falling into step once again beside him. As Dean unlocks the car, he catches himself grinning like an idiot. He hasn’t felt this wired after a date in years. Maybe ever. Sure, part of him knows there’s something off about Cas—something too sharp, too controlled—but instead of backing away, Dean finds himself leaning closer.

Because whatever this is, it feels like the start of a story he’s been waiting his whole damn life to write.

____________________________________

Dean’s apartment is smaller than Castiel expects. A narrow hallway opens into a living room crowded with books and half-empty coffee cups. A stack of dog-eared paperbacks leans against the wall by the couch. Notes are scattered across the coffee table, some pages stained with rings from forgotten mugs. It feels lived in. Warm.

Castiel takes it in silently as Dean drops his keys in a bowl by the door and kicks off his boots. The space is cluttered, imperfect, but every corner echoes the shape of Dean.

“You want a drink?” he asks, moving further into the apartment. Dean’s voice is casual, but the edge of nerves betrays him. He gestures to the kitchen. “Got whiskey. Beer. Think there’s some wine if you’re classy.”

“Whiskey,” Castiel answers, running his fingers over picture frames showcasing smiling faces and happy memories.

Dean pours two glasses, carrying them back with a lopsided grin. He hands one over, fingers brushing Castiel’s. The contact is brief, but it sends a current through his chest. A thrill of want for something he’s not sure he can have. Castiel watches Dean drop onto the couch, motioning for him to sit. He carefully lowers himself onto the cushion beside him.

Dean raises his glass, toasting, “To…whatever this is.”

Castiel touches his rim to Dean’s, never looking away. “Whatever this is,” he echoes.

Dean sets his glass down after taking a sip, leaning back with a sigh. “You’re a hard guy to read, you know that?”

Castiel smirks internally, responding aloud, “I know.”

“Guess that makes you a good match for me.” Dean tilts his head, eyes bright with challenge. “Most people think I’m too much…or too weird.

“You’re not too much,” Castiel insists, even though he barely knows the man. He’s getting a sense of who he is, even more so now, being in his space. “You’re…curious.”

Dean blinks at him, the grin faltering just slightly, replaced by something more vulnerable.

Castiel holds his evergreen gaze. He thinks of splashes of crimson, of silence, of all the lives he’s taken without hesitation. Yet…sitting here, in Dean’s space, listening to his laugh rattle against the cluttered walls—Castiel feels something altogether unfamiliar. Something dangerously close to belonging.

Dean’s thigh presses warm against Castiel’s where they sit together on the couch. His glass is empty now, head tipped back against the cushion, grin gone soft around the edges.

“You look like you’re still trying to figure me out,” Dean purrs, turning just enough that his shoulder brushes Castiel’s.

“I am,” he admits.

Dean’s breath hitches, a flash of nerves under the boldness. But he doesn’t pull away. “Well… maybe this’ll help.”

He leans in, close enough that Castiel can feel the heat of him, smell the faint trace of whiskey and leather clinging to his skin.

Castiel doesn’t think, moving forward and meeting Dean halfway.

The kiss is unhurried at first—careful, exploratory. But a low moan escapes Dean, and suddenly it’s more. Hands reach to grip his curls as his own cage his date’s face, and glasses are nearly knocked off the table. The two of them tumble deeper into something neither planned but both clearly want.

Dean tastes of whiskey and heat. His mouth is eager, messy, hungry in a way that makes Castiel grip his jaw, stilling him just long enough to press in deliberately, to take control of the kiss. Dean shudders against him, a whine follows, and Castiel feels the answering spark in his chest like a fuse catching flame.

The couch isn’t large enough for two men over six feet; luckily, Dean has other plans. Fisting both hands in the lapels of Castiel’s coat, he tugs him up with surprising force. They stumble backward, mouths still colliding, until Dean’s shoulders knock against a doorframe. Another tug, and Castiel’s knees catch the edge of the bed, unsteadily pulling Dean down with him. 

Clothes scatter in graceless heaps, buttons popping loose, zippers rasping down. 

Dean laughs into his mouth, breathless, reckless. “Guess you’re not much for taking it slow, huh?”

“Why waste time?” Castiel asks, voice low and rough with need.

Dean’s grin tilts sharply. “Good…” 

His hands are already tugging Castiel’s jeans down his thighs, impatient, fingers skimming skin like he can’t decide whether to grab or tease. Dean is all restless hands and biting kisses, shifting constantly, as though if he stays still too long, the moment will dissolve. He sucks at Castiel’s throat, tugs at his hair, and drags his nails down his sides. Each sound he makes—every curse, every gasp—is a spark that ignites Castiel’s blood.

Castiel doesn’t mirror Dean’s chaos. Where Dean claws and bites, dragging him down with restless urgency, Castiel answers with steadiness. His hands roam slowly, deliberately, learning every line of muscle under his palms. He drags his fingers over the ridges of Dean’s ribs, the curve of his hips, the faint scars scattered across his skin—tracing them as if they’re a map he intends to memorize.

Dean pants against his mouth, impatient, hips snapping upward in jagged rhythm. His nails scrape down Castiel’s back, sharp enough to sting, and his laugh shatters into a groan when Castiel shifts, pressing into him just so.

Cas,” Dean gasps, voice cracked open, desperate.

Castiel catalogues everything—the tremors in Dean’s thighs, the quickening stutter of his breath, the way his body bows under every touch like an instrument strung too tight. He adjusts, pressing into the places that make Dean curse and clutch at him with white-knuckled fists. Every reaction is noted, stored away, building a pattern of pleasure, edging dangerously close to making love.

Dean tries to drag him faster, rougher, like he’s chasing an edge he’s terrified might vanish. But Castiel holds him close, unyielding, forcing him to feel every moment as it builds, sharp and overwhelming.

When Dean finally breaks, he comes with a ragged cry, trembling apart beneath him. His head tips back, mouth open, peridot eyes fluttering shut as his whole body shudders with release.

Castiel doesn’t look away. He watches every flicker of his face—the flush high on his cheeks, the soft openness that slips through all the bravado, the raw aliveness blazing through him. In that moment, as Dean shakes and gasps beneath him, Castiel thinks I could keep this. I could keep him.

The thought tears through him, unexpected, uncontrollable, and when his own climax surges up in answer, it’s with a force that steals his breath. Pleasure rips through him, unmoored, all-consuming, and for once, he doesn’t fight it. He lets himself fall. As pleasure floods his system, blinding, all concern is shoved far back into shadow. The room is quiet except for their breathing, harsh at first, then softening as the tremors fade. Heat clings heavy to the sheets, the air thick with sweat and sex.

Dean pulls him down, still breathless, still shaking, and kisses him again. Sloppy, lingering, almost tender. 

Jesus, Cas…” he murmurs, voice raw. He flops onto his back, chest heaving, arm thrown dramatically over his face. His laugh comes out ragged, half-broken. “You don’t do anything halfway, do you?” 

Castiel lies beside him, watching the rise and fall of Dean’s chest. He’s silent long enough that Dean peeks from beneath his arm, grinning crookedly. “That’s not a complaint, by the way. Just—damn.

“I don’t waste time, remember?” Castiel says, chuckling softly.

Dean snorts, rolling onto his side to face him. His hair is damp, sticking up in uneven tufts, freckles scattered bright across flushed skin. “Yeah, I’m getting that impression.” He nudges Castiel’s shoulder with a lazy grin.

Castiel hums in quiet acknowledgment. His gaze lingers on Dean’s face, memorizing every detail. Dean notices, of course.

“What?” he asks, mock-suspicious. “You look like you’re plotting something.”

Castiel tells a half-truth, “I’m not…‘plotting’, exactly.”

“Uh-huh,” Dean smirks, eyes glinting even through exhaustion. “That look means trouble.”

Castiel tilts his head, considering. “Would it bother you if I said I was thinking about you?

Dean’s grin shifts into something less guarded. He swallows, eyes flicking away for a moment before meeting Castiel’s again. “Guess that depends on what exactly you’re thinking.”

“That you’re…unlike anyone I’ve ever known,” Castiel admits, tone low, honest.

Dean huffs, embarrassed, tugging the sheet higher like it might shield him from sincerity. “Careful. Talk like that and I might start thinking this is more than just a one-time thing.”

Again, he answers honestly, “Perhaps it is.”

Dean blinks at him, thrown for a second, then laughs once more—warm, shaky. “You’re a real piece of work, Cas.”

Castiel doesn’t respond. He only reaches out, brushing a damp strand of hair back from Dean’s forehead, letting silence stretch in the space between them.

Dean doesn’t push. Not this time. He only settles closer, murmuring into the quiet, “Maybe that’s not such a bad thing.”

Dean drifts, half-asleep but stubbornly clinging to wakefulness, shifting closer until his forehead brushes Castiel’s shoulder. His hand rests warm against Castiel’s chest, fingers splayed like he needs the reassurance of contact.

“You’re warm,” he mumbles, voice thick with exhaustion.

Castiel hums in acknowledgment, though the observation is strange. His temperature is no different than any man’s. Still, Dean’s touch lingers, grounding him in a way Castiel doesn’t expect. The window rattles faintly with the breeze outside, but inside it’s quiet.

Dean speaks again, softer this time, words muffled against his skin. “Don’t usually sleep this close to anyone. Never feels right.” He shifts, pressing in tighter. “But you…” His breath evens out before he finishes the thought.

Castiel stares at the ceiling. His body is still, his mind anything but. He has shared beds before, of course—necessary arrangements, brief encounters, nothing more. This is different. Dean doesn’t sprawl to claim space, doesn’t hover at the edge in fear. He curls into Castiel like it’s natural. Like he belongs.

Castiel’s arm moves almost without his permission, curving around Dean’s back, hand resting at the dip of his spine. Dean sighs in his sleep, content, and burrows closer.

For the first time in longer than he can remember, Castiel doesn’t rise immediately after. He lets the weight of another body pin him to the mattress. He lets himself listen to the rhythm of Dean’s breathing, the steady beat of his heart pressed to his chest.

It feels…dangerous. More dangerous than any kill. Because this is something he could lose.

Castiel lies awake long after Dean’s breaths even into the cadence of sleep, eyes fixed on the dark ceiling, thinking not of escape routes or knives, but of freckles, bowed legs, warmth, and the strange, impossible thought that he might want to stay.

*****

The city outside is still dark when Castiel finally eases out from under Dean’s arm. Dean stirs faintly but doesn’t wake, only rolling toward the warm spot Castiel leaves behind. His breathing remains steady, soft.

Castiel doesn’t leave—not yet. Instead, his eyes roam the bedroom, taking in the clutter with a new lens. The stacks of books. The scattered notes. Evidence of a mind as restless as its owner. On the desk, a notebook lies open, half-buried under loose pages. Scribbled handwriting, margins filled with arrows and corrections. Drawn to it, Castiel steps closer.

The notebook is heavier than it looks. Not in weight, but in presence. Every line, every pen etched note, is a mirror. His methods. His ability to evade capture flawlessly. Words leap back at him, familiar in ways they should not be. Precise descriptions of wounds. Timelines aligned too closely with his own work. The Seraph—that despised name the news carved out for him—scrawled again and again across the paper. 

Dean has been circling him for months without even realizing it.

Castiel turns another page, eyes narrowing. Each detail is meticulous, the kind of clarity only someone who understands—or obsesses—could produce. But there’s no condemnation here, no disgust, but fascination. Curiosity that borders on reverence.

There’s no sensationalism or mockery either. It’s the closest anyone has come to seeing him as he truly is.

Dean has been writing about him. Not fiction, not invention. A reconstruction. A pursuit.

He stares at the words, vision blurring as he reads line by line. By the time he reaches the last page, Castiel knows what he has to do. 

__________________________

The sun slices thin across the blinds when Dean wakes. His mouth is dry, his body deliciously sore. He rolls over, expecting the bed to be warm. It isn’t.

Sitting up, his squinted eyes catch sight of Cas across the room. He’s pacing in half shadow,  back to Dean, shoulders tense. His hands grip Dean's notebook, flipping through the pages like the Sunday paper. It’s the one he left on the desk, open and cluttered with scribbled notes for his next novel.

Shit…

“Hey,” Dean rasps, throat rough. “You’re up early.”

Cas doesn’t turn immediately. His eyes trace the page like he’s reading something sacred. Finally, he asks, voice low and even, “This story you’re writing. Who is it about?”

Dean blinks, caught off guard by the question. “What—oh. That’s my next project.” He sits up straighter, dragging a hand through his hair. “True crime. The Seraph case. You’ve heard of it, right? Guy’s all over the news.” His chest tightens with an odd flicker of embarrassment, heavier than he usually feels when discussing his day job. Not everyone understands his fascination. “I’ve been piecing together timelines, interviews, and crime scene reports. Trying to get inside his head.”

Cas turns then, slow, deliberate. His ocean eyes are sharp, unblinking. “You already are inside his head.”

Dean frowns, a laugh tugging at his lips even though something in his gut twists. “What’s that supposed to mean…?”

“It means,” Cas murmurs, stepping closer, notebook still in hand, “that it’s me.”

Dean freezes. For a heartbeat, the words don’t register at first. Horror dawns with a thrill as they sink in. The Seraph. The faceless shadow that’s been haunting the city for months. The man Dean has been chasing in headlines and notebooks full of notes, trying to reconstruct step by step.

Standing here. In Dean’s apartment. Barefoot on his floor.

Dean’s pulse pounds. He thinks of every little slip from last night, every too-sharp answer, every calm admission. Clues he should have pieced together. Clues he ignored because he wanted—no, needed—to believe this was just an ordinary date. That he could have this god of a man, who actually finds him interesting, not depraved, but inevitably, the other shoe had to drop.

Now Cas is staring at him with that same darkness lurking behind his cobalt eyes, like the story Dean’s been writing just climbed off the page and claimed its author.

Dean won’t run or scream. No, it’s too late for that. He can’t deny the proof standing right in front of him in all his naked, muscled glory.

Instead, he grins—shaky, reckless, but certain. “Guess I’ve been looking for you longer than I thought.”

______________________________

Castiel watches closely as Dean’s heart stutters. His grass-green eyes have gone wide, pulse fluttering at the hollow of his throat. But he doesn’t attempt to flee. He only looks at Castiel, alive with reckless defiance.

When he grins, nerve-ridden but unyielding, Castiel feels that pull again, that dangerous, impossible pull. The one he’s been fighting since the moment Dean leaned across the table in that bar.

Setting the notebook down on the bed, Castiel steps further into Dean’s space. His voice drops, low and certain. “Do you know what I intended to do last night?”

Dean swallows, throat working, voice rough. “No…wanna enlighten me?”

He states it plainly, “I meant to kill you.”

The words fall without hesitation, sharp as a blade. He doesn’t soften them. Doesn’t try to disguise the truth. It is what it is—what it always is.

Castiel paces slowly around the bed, gaze never leaving Dean. “I didn’t believe there could be a perfect match for me. I didn’t even use my true identity when I signed up. The plan was simple. Meet you. Walk you home. And then…” He gestures with one hand, casual as a shrug. “A bit of fun and a neat end.”

Dean’s chest rises and falls too quickly, breath catching, but still, he doesn’t move away. He looks…riveted.

Castiel’s eyes drag over him, lingering on the flush still warming his skin, the bare chest rising and falling under the faint glow seeping through the blinds. His lips part slightly at the confession, and Castiel feels the ache of want twist deep in his chest.

“But then I sat with you,” he continues, softer now. “Listened to you. Watched you smile.” He shakes his head, mouth twisting—not a grin, not a grimace, but something raw between the two. “You fascinate me, Dean…and for the first time in years, I found myself wanting something more than the kill.”

Silence stretches between them, heavy as chains.

Dean exhales, shakily, but he doesn’t look away. If anything, he leans forward slightly, golden greens burning with something Castiel can’t quite name. “Guess I should be flattered.”

“Yes,” he murmurs, simply. Castiel’s voice is steady, but his chest is a storm. “You should.”

_____________________________

Dean can’t stop staring at him. The words I meant to kill you still hang between them, sharp as glass, but Cas says them like he’s confessing to a grocery list. No guilt or shame, just the same honesty he’s offered since the moment he sat down across from Dean last night.

He should be terrified…and he is, just not the way he should be. Every instinct screams at him to run, to grab his phone, to call the cops and get the hell out. His pulse is high, sure…but it’s not fear; it’s adrenaline. Because he knows this story. He’s written it…and now he’s living it.

Dean exhales. “Guess I should be flattered.”

“Yes,” Castiel responds with a shrug. “You should.”

“Y’know,” Dean says, voice rough, “you don’t really hide it all that well.”

Cas raises an eyebrow, brows furrowed in what could be indignation…or the last thing Dean sees before Cas decides he should kill him after all.

Cas grumbles, “I’ve evaded law enforcement for two years.”

“Yeah, but not me,” Dean teases, leaning forward, reckless grin tugging at his lips. “I’ve been writing about you, researching and tracking you this entire time without even knowing your name. Got pretty damn close too, considering.”

Cas studies him, sapphire stare unblinking. “You aren’t afraid.”

“Oh, I’m scared shitless,” Dean admits. “But..I can’t look away.”

Cas lets the silence stretch—not cautious or calculating, but considering. Finally, he says, “Then let me show you.”

Dean swallows, suddenly unsure, “Show me what?”

Cas’ gaze doesn’t waver, “The truth.”

*****

The hallway smells the same as always—stale carpet, dust, and faint cooking grease from the apartments nearby. But Cas walks like a man who already knows where he’s going.

Dean’s heart hammers as they stop outside a door just two units down from his own. A door he’s passed a hundred times, never thinking about the person behind it.

Cas pushes it open with his shoulder without knocking.

“Don’t touch anything,” he warns as they step just past the doorway and shut it behind them.

Inside, the air is heavy. Metallic. Dean’s stomach turns before his eyes even find the source. A man lies sprawled across the floor, chest blooming red. His eyes are grey and glassy, mouth slack.

“Wha—” Dean chokes, hand flying to the doorframe. Cas’ tight grip holds his fingers back at the last second. Oh, right. Fingerprints. Still, “This is—Cas, this is my—he’s my neighbor.”

Cas doesn’t flinch or apologize. He stands over the body like he’s presenting it. “I told you I wanted to kill you,” he says, voice calm, even. “Instead, I chose him.”

Dean’s pulse thunders in his ears. Horror claws up his throat, but right behind it is something else—heat, electricity, the rush of seeing the truth unmasked. His mind races, already putting words to paper, shaping the scene for readability on the page.

Dean swallows hard. His voice is rough, uneven. “Why him?”

Cas tilts his head. “Proximity. Opportunity. Irrelevance.” He pauses. “And I wanted you to see me.” He watches him carefully, asking, “Do you understand now?”

Dean drags in a breath, gaze fixed on the spreading stain beneath the man. He should be screaming, should be running. 

But instead, his lips part around the only words that make sense, “…yeah. I get it.”

____________________________

Castiel watches him carefully. Watches the way Dean’s gaze flicks from the wound to the blood pooling on the floor, then back to Castiel’s steady hands. The horror is there, sharp and visceral—but beneath it, something else. A spark.

Most people recoil or scream. Some beg. Dean does neither. He trembles, yes, but his eyes don’t leave the scene. He catalogues…absorbs.

He understands.

“I told you I wanted to kill you,” Castiel explains evenly. “Instead, I chose him.”

Dean swallows hard. His voice is rough, uneven. “Why him?”

Castiel tilts his head. “Proximity. Opportunity. Irrelevance.” He pauses. “And I wanted you to see me.”

That pulls Dean’s eyes away from the body and straight to him.

There it is—that look. Terrified, yes, but alive in a way most men never are. The writer’s mind is already turning, shaping, narrating. Instead of disgust, instead of retreat, Dean stays. Castiel feels the shift deep in his chest, subtle but undeniable. He isn’t running.

Cas watches him carefully, asking, “Do you understand now?”

Dean exhales shakily, words dragging out of him like a confession. “…yeah. I get it.”

Castiel takes a step closer. The air between them is heavy with copper and silence. It’s more of a soft command than a request, “You won’t tell anyone.”

Dean huffs out a shaky laugh, incredulous. “You think I could explain this to anybody? ‘Oh yeah, my new boyfriend is The Seraph, by the way…’

The corner of Castiel’s mouth twitches, almost a smile. Boyfriend…hmmmm. He hadn’t expected Dean to survive the night. He hadn’t expected him to see all that he is and not run as fast as he could in the opposite direction. Castiel never planned on revealing who he really is to anyone. Yet here Dean stands, steady in the doorway of a fresh kill, golden greens alight with something closer to reverence than fear.

Mine, Castiel thinks. Closer than anyone else has ever come.

____________________________

Cas turns to him, calm as ever, voice cutting clean through the silence. “You’ve seen what I do. Now you have to decide.”

Dean swallows hard. No pressure. His pulse hasn’t slowed since they stepped into the apartment, since he saw the body cooling on the floor. The copper tang still clings to the back of his throat, sharp and metallic, and it’s making him dizzy. His hands twitch at his sides, not sure if they want to reach for a weapon or a pen. Maybe both.

He forces a laugh that comes out rougher than he means. “What decision?”

But he already knows.

Cas steps closer, boots silent on the carpet. The distance between them shrinks until the world is narrowed to cerulean eyes, sharp and unyielding. “To stay with me,” he says evenly, “or to run.”

The words hang there, heavy as a blade suspended over his throat. Dean’s mouth goes dry. He pictures bolting—sprinting for the door, fumbling for his phone, telling the cops he’s just uncovered the Seraph himself. That’d be the smart thing. The sane thing.

But then he thinks about last night—the press of Cas’ mouth, the steadiness of his hands, the way he looked at Dean like no one else ever has. He thinks about the blood on the floor, yes, but also about the thrill still racing through him, the sentences already forming in his head, the story clawing to get out.

He lets out a ragged breath, a laugh that sounds more like surrender. “If I was gonna run, Cas…” His grin twists the corner of his mouth. “I would’ve done it hours ago.”

Cas studies him in silence. For a long moment, the air between them is all copper and static, humming with possibility. He nods once with finality, certainty. It goes unspoken, but Dean understands. The next time, he won’t just be observing.

_________________________

It happens two nights later. A man in the alley behind a random bar a few towns over—loud, careless, the kind of person no one will miss. The city noise doesn’t reach this far back. It’s just the stink of garbage, the hum of a flickering light, and the rhythm of footsteps echoing off brick.

Castiel’s knife finds its mark with the same precision as always. The man gasps once, a wet sound, before slumping forward. But tonight isn’t like the others. Tonight, Dean is there.

He stands frozen a few feet away, breathless, wide-eyed, trembling not with fear but with anticipation so sharp it cuts through the air.

Castiel wipes the blade once on his sleeve, then turns. His voice is calm, even. “Here.”

He presses the handle into Dean’s hand, their knuckles brushing, streaked hot with fresh blood. “Finish it.”

Dean stares at him, then at the man’s body. His throat bobs as he swallows, grip uncertain. For a moment, Castiel thinks he might step back, sever the fragile tether between them. But then Dean exhales, a shaky sound, and steadies his hand. His jaw sets. He drives the blade in, no further hesitation. The sound is wet, final. Dean’s whole body jolts with the motion, with the sickening give of flesh. He grips the hilt tighter, knuckles white, forcing it all the way through.

When it’s done, he stumbles back a half step, panting. Sweat slicks his temple, his pulse hammering in his throat. He looks wrecked, wild. But his eyes—grass green and burning—meet Castiel’s without wavering. Horror and exhilaration blaze side by side in them.

Castiel steps closer, steadying Dean’s wrist as he pries the blade from his fingers. He doesn’t let go right away, letting Dean feel the press of his hand, the silent claim in the gesture.

Dean sways forward, catching his mouth. The kiss is hard, messy, tasting of salt and copper, desperation threaded with triumph. Castiel feels it then—the click of inevitability, sharp and certain.

Dean belongs to this moment. To him.

______________________________

Dean’s lungs burn. His hands are still sticky, streaked with red that isn’t his own. It clings under his fingernails, slick on his palms, drying in ugly patterns on his skin. He can’t stop staring at them, as though if he looks long enough, the sight will shift into fiction.

But it doesn’t. This isn’t a draft. Not ink, not imagination. It’s blood. Real.

His stomach lurches, but he swallows it down, chest heaving. He should be disgusted, broken apart by what he’s done. Instead, he’s shaking for an entirely different reason—wired, alive, every nerve lit up like he’s standing in the center of a lightning strike.

He wants to put it on paper. Every detail. The copper tang thick in the air. The weight of the knife biting into his hand. The sound—that awful, wet sound—that still echoes in his ears.

Cas, standing steady and guiding him, watching him like this was a ritual they were meant to share. Dean drags his eyes up from his bloodied hands to meet Cas’. Those ocean eyes are fixed on him, dark and unblinking, but there’s something else in them now. Not just scrutiny. Something claiming. Something certain.

Dean swallows hard, throat raw. His voice scrapes when it finally comes, “Jesus Christ.” He huffs out a laugh, ragged and disbelieving. “I actually fucking did it.”

His pulse thunders, but the truth is undeniable. He doesn’t feel ruined; he feels chosen.

*****

Back in his apartment, Dean sets the notebook down on the table. His hands still shake, but his mind is sharp—sharper than it’s ever been. He can’t stop. The pen digs into the page, words pouring out in dark, steady lines.

Descriptions of the alley. The body cooling against the bricks. The metallic air, thick enough to choke on. Cas beside him—precise, unshaken. The intimacy of silence shared in the aftermath of violence. It doesn’t read like reportage anymore. Not detached or neutral. Each sentence hums with something heavier. Closer to devotion.

When he pauses, the room is filled with quiet, but for the sound of steel on cloth. Cas sits across from him, cleaning his knife in slow, methodical strokes. Each pass is ritual, a reflection of Dean’s own—the writer’s pen and the killer’s blade, both deliberate, both unstoppable.

Dean stares down at the words he’s just written. Then he pushes the notebook across the table, his hand brushing against Cas’ as it slides between them. 

His voice is low, rough from cigarette smoke and adrenaline as he murmurs, “Guess this one’s yours.”

Cas looks down at the page. He reads enough to understand—not just what Dean saw, but how he felt it. When his gaze lifts again, it pins Dean in place. And for the first time, his mouth curves into a true smile, unrestrained, almost radiant.

The sight knocks the breath from Dean’s chest. He leans back in his chair, letting it settle into him, thinking, Yeah. I could get used to this.

Notes:

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