Chapter Text
You loved him.
Even though he was fearsome, even though he was a monster, even though he was a sadist and a masochist and had killed countless others.
You loved him despite his glaring personality flaws, despite his penchant for violence, despite his lewd remarks and debasing words.
You loved him because underneath it all he was sensitive. He was caring. He was in need of a love like yours, someone to hold him when he cries at night, when the nightmares are too real, someone who will wipe his brow when he sweats through a fever, someone who will touch him gently and kiss him fiercely. He needed your love. And you needed his, a powerful force of nature who would do anything for you, who would fight back the darkness surrounding you, who would tell you he loved you every single day.
You loved him because he was Sans, and simply that, and never claimed to be anything else. You loved him for his honesty. You loved him for his sense of loyalty. You loved him for the laughter you shared in the dead of night when everything else around you was falling apart, but he was holding you so tight that you couldn’t shatter.
In the two years since you earned his eye at a bus stop, he had never made you question that you loved him, or the reasons why.
Honesty. Loyalty. Passion.
So when you found him in your bed, with a wispy blonde thing you’d never met, you weren’t sure if you could believe your eyes.
When the shock wore off, as he untangled himself from her, you felt the rage building in your chest. Relax, y/n, it’s not her fault. Maybe she didn’t know he had a girlfriend.
“This is your girlfriend?” The girl laughed, and Sans didn’t respond, frozen underneath her naked body. “Wow, no wonder you brought me ho--”
She didn’t finish her sentence.
You had grabbed a fistful of her long bleach-blonde hair and dragged her off of him, slamming her on the ground with enough force to make her head bounce. She shrieked as you punched her square in the jaw, and you threw her skanky clothes at her whimpering body.
“L e a v e.” You snarled, and she skittered quickly out of the room, fear in her eyes.
You didn’t look at him.
“sweetheart.”
You marched to the closet and dragged out your purple suitcase.
“darlin’.”
You threw it open on the ground and stomped over to the dresser.
“hey, i’m talkin’ to ya.”
You slammed the drawers open, grabbing fistfuls of clothes and throwing them into the open suitcase.
Skeletal hands wrapped around your wrist, preventing you from grabbing another fistful.
“i said, hey.”
You shook him off and stalked out of the room to the bathroom. You began to pull everything out of the medicine cabinet. When you stormed back into the room, all the clothes from your suitcase had been unpacked and replaced into the still-open drawers. You threw your medicines and toothbrush in the bag and went back to the dresser.
You ran square into his sternum, bouncing off his soft white t-shirt. He had at least put his fucking pants back on.
“Get the fuck out of my way, Sans.” You said, deathly calm. He crossed his huge arms, crimson eyes staring down at you.
“so you can pack more of your shit? no. you ain’t leavin’.”
You groaned in frustration and turned on your heel, heading to the closet. You pulled out your clothes, throwing some in the suitcase and the ones he specifically bought you on the floor.
You felt a tug and you flew across the room, slamming into his ribcage. He flipped you around with his magic and gripped your upper arms, effectively holding you in place as he lowered himself to your eye level.
“t h a t’ s e n o u g h .” He growled, digging his fingers into your arms. You finally looked up at him, and for the first time you felt the tears finally pricking your eyes.
“Don’t you fucking touch me, Sans.” You said through gritted teeth, tensing up all over and leaning away from him. “I don’t even wanna look at you right now. Let me go !”
“oh, good, you know how i feel .” He snarled, effortlessly holding you against your struggles. You stopped and stared at him. The fuck did he mean by that?! “yeah, don’t play innocent with me, princess , i know you been cheatin’ on me. how’s it feel? how’s the betrayal sittin’ in your heart?”
“I don’t know what the fuck you’re talking about!”
He shook you a little, pulling you closer as he backed you up against the wall.
“fuck you! you think i don’t got earholes? every damn monster in this town knows you’re mine, and every one of ‘em tells me you’re sneakin’ away to see a little secret at muffet’s every thursday. for months i been ignorin’ those rumors, so don’t you fucking tell me you don’t know!”
“Sans, I have no idea what you’re fucking talking about, now get off me !”
“let’s see if you know this, then, sweetheart.” he loomed over you, pointed teeth bared in a grimace. “i saw you, last thursday, at muffet’s. brown hair, blue eyes, real sweet number with a charmin’ smile. and you were all over ‘im, huggin’ and laughin’.”
Realization dawned on you, and it only made you angrier. You shoved him back off of you.
“That’s my cousin! He’s dating Muffet for fuck’s sake!” You shouted, hands balling into fists to try and subside the tremble in your voice. “AND I fucking told you I’d be seeing him on Thursdays to help him make arrangements for his fucking daughter!”
You slammed a fist into his sternum. It didn’t affect him, but your words did. His eyes widened as he realized his mistake.
“You fucking asshole! How fucking dare you !” You screamed, beating his chest in anger. “Honesty? Loyalty? Passion? Do those mean nothing to you?”
“i...i…” He backed up a step, but you followed, hands still beating at his chest. It hurt as you struck his bone, but you ignored it, rage spilling over. He had done this specifically to hurt you. To get back at you for something you didn’t do.
“You didn’t even talk to me! You didn’t even ask! You just went out and fucked some bitch like it was nothing !”
“sweetheart, please stop, you’re gonna hurt yourself…”
“Don’t fucking call me that! I am not your sweetheart anymore!” You shoved him back, making a beeline for the dresser again. You shoved some clothes in your bag and zipped it. You’d come back for the rest later.
“babydoll, please stop, let me talk to y--”
“Too fucking late!” You picked the bag up by the handle, but suddenly it was gone. You whirled to face him, your cheeks red from screaming. “Give it back.”
Sans didn’t budge, and the suitcase floating above his head disappeared. “oops. now ya can’t go.”
“Ugh! You are an insufferable brat!” You shrieked, kicking a discarded dress across the floor. You turned to leave without your bag, but his hand closed around your wrist and he pinned you to the wall.
“i will teleport the clothes right off your fucking body and force you to stay if i have to.” His breath was hot on your neck, and you squirmed underneath his grip. You knew it was useless at this point, because he was so much stronger than you. You went deadweight in his hands and he caught you. “oh c’mon, now that’s just childish.”
“Fuck you.” You retorted and he sighed. You squealed as he tossed you over his shoulder effortlessly, making his way back to the bed. You started hitting him on the back. “Hey, let me go! Fuck off!”
“stop squirmin’ or i might drop ya on your head.”
He did drop you, but it was with a soft poff onto the bed. You immediately turned away from him, curling up on your usual side by the wall. You felt the weight as he sat down on his side, and adjusted yourself so you wouldn’t roll into him.
There was a long silence, leaving you to stew in your feelings as he tried to think of what to say.
“Don’t fucking touch me,” you hissed, as his fingers brushed your shoulder. He reluctantly obeyed.
You couldn’t see him with your back turned, and the tears flowed silently down your face. You had never been so angry in your entire life, so hurt…
You weren’t able to hold back a choked sob as it escaped your lips, and you curled into yourself. His hand hesitantly brushed your shoulder, but you were too emotionally exhausted to yell at him anymore. He gently held your shoulder, and you turned farther away, burying your head in your pillow.
“hey...sweetheart…” His voice sounded hoarse, upset. Good. Fucker.
“Go away.” You whined shakily, but he didn’t obey this time.
“babydoll...please don’t shut me out.”
“And why not?”
He didn’t have an answer to that. You heard silence for a few seconds, and then his large arms wrapped around you, trembling, and he buried his face in your shoulder.
“just please...i’m no good at apologies but...and...an’ i know i fucked up...i was just so angry...so jealous...so stupid…”
You lay despondent in his arms, the energy sapped from your muscles as the reality hit you. You loved him. You still did. You trusted him, and he failed you...and on purpose…
“i know i ain’t worth it, but gimme another chance, sweetheart...please.”
“Don’t.”
“c’mon, babe…you know i love you.”
“Sans, please.” you choked out over a sob. “You’re making it worse.” You shouldn’t have talked. Sobs began to shake your body as you gave in to the tears, and his face moved to your hair, whispering to you.
“ohhh baby...no nonono, don’t do that, don’t cry…”
“Sh-shut up!” You gasped between sobs. Don’t cry?! How could you not?!
Against your will, you were flipped to face him, and his hands cupped your face, red tongue gently licking your tears away. Your hands bunched up in the fabric of his white shirt, anger welling anew. But your body wouldn’t allow you to fight anymore, and you gave in to the need to be held by him.
When you stopped refusing his touch, he held you close gently, one hand on the small of your back and the other tangled in your hair. He played with your hair gently while you sobbed. Your weakness.
“shhhh...don’t cry babydoll…” Tears threatened his voice as he tried to comfort you, making your sobs grow heavier and your trembling get worse.
“I….I just…” you choked out, burying your face in his shirt. “I...can’t…”
“shhh...i’m sorry sweetheart, i am, i really am...i’m sorry i’m such a bonehead…”
Your fist beat weakly against his chest as you attempted to convince your tired body to move away. Your hand hurt from hitting him earlier.
One skeletal hand wrapped around your wrist, gently stopping the pounding. The bruises on your palms stopped to hurt as the tingling of healing magic relieved the pain.
“please don’t hurtcha’self.” He muttered against your hair.
You let him hold you like that as the sobs faded and acceptance set in. Rage burned in your heart, eclipsed by deep depression and the sick realization that you weren’t going to leave him.
“I must be the stupidest fucking person in the world.” You muttered into his chest. “Because I can’t even bring myself to really leave.”
He sighed, holding your hand to his chest as he squeezed you tighter. You sighed as a warm feeling filled your chest. “there, there...that’s better, right?”
Your eyes snapped open. Did he think you wouldn’t notice?! You shoved him off with newfound strength.
“Are you really fucking with my emotions right now?! Are you serious?” You blocked his hand as he tried to reach for you again. “You can’t magic this away, Sans, don’t fucking touch m--hey! Let me go!”
He had gripped you, pulling him back to him with a growl. You struggled against his hands, but his grip was absolute, so you gave a frustrated sigh and gave up.
“either you let me make you feel better this way…” You felt the tingle of the emotional manipulation bringing warmth to your chest. “...or this way.”
His kiss was forceful, and hot breath took yours away as he pried your lips apart to let his tongue in. You tried your best to stay stoic, but he knew you too well and you couldn’t help a small moan. He pulled back, a look of triumph in his eyesockets. He was about to lean in again, but you hissed, recoiling. He grimaced at you.
“stop it.”
“So how was it?” He looked surprised at the question.
“eh, pardon?”
“How. Was. She?” You repeated slowly. “You sounded like you enjoyed it from the other side of the door.”
You reveled in the panic on his face as he tried to find an answer.
“she was awful. obviously.”
“Ah, so it wasn’t even worth it.”
“hey, now th--”
“Why her? Was it her streaky bleach job? Her fake tits? Did you pick her for a reason?” You pressed into him, making him sweat.
“sweetheart, please.”
“Just answer the fucking questions.”
“...no, i didn’t pick her for a reason, not in particular.”
“Oh, great, so you’ll cheat on me with anyone?”
“that’s not what i said.” His voice dropped an octave. He was getting angry.
“Are you angry? Good, get angry.” You huffed, rolling over away from him. “Now you see how I feel right now. I hope you got your rocks off with her because you’re not fucking touching me tonight.”
He was quiet for a moment, and then suddenly he was on top of you, sharp teeth bared. “that kinda sounded like a challenge, sweetheart.”
“It wasn’t.” You glared up at him, and his grin faltered for a split second, doubt clouding his mind momentarily at the look in your eyes. But he must’ve seen something he liked because his grin came back with a vengeance.
“y’know, doll, anger looks good on ya. i won’t be bangin’ other chicks or nothin’ anymore, but maybe i should make you mad more often.” He traced a finger down your jaw, gripping your chin and forcing you to keep your eyes on his. “that look could kill.”
You spit on him.
He growled and slammed you back into the pillows, bringing his other hand up to wipe your spit off his face. You couldn’t help the manic giggle that escaped you at the anger on his face.
“oh, you think that’s funny?”
“I think it’s hilarious.” You said defiantly. Something in you wanted to make him mad, make him so mad he couldn’t stand it, so he would just rip into you, showing you how much he wanted you and only you.
“listen, you fuckin’ bitch, i’m tryin’ to make nice with you here. don’t make me mad...” His fingers released your chin and reached to grab your hair, pulling your hair back and exposing your neck. He leaned down and nipped at your neck. “...cause i bite, baby.”
He was feeding right into it, getting angry and possessive. Well, two can play that game.
“You bite like a pussy. Your brother bites harder.”
The snarl that escaped him was like a caged animal as he sunk his teeth into your shoulder, yanking your hair hard to keep you pinned.
You shrieked in pain, but also with pleasure. He chuckled against your neck as he licked the fresh wound, sending a shudder down your spine.
“oh, you like that, pet? you want me to mark you like property?” He growled, grin stretching wide across his face. “you want me to show you that you’re mine, and only mine?”
“No, I want you to show me that you are mine .” You said, training your eyes on him unblinkingly. He’d better get ready for some serious groveling when this is all over, but right now...right now he just needs to be yours.
“heh. s’at all? you’re pretty easy to please.”
“I think you’ll find that to be far from the truth.”
“so what, i just gotta do everything you say?” He released your hair, sitting up. “lay it on me, sweetheart, i’m your faithful servant.”
“That’s a pretty poor choice of words, asshole.”
“what can i say, i like dark humor.”
His grin was giddy with anticipation as you rose, and he followed you as you moved off the bed.
“First, no touching me.”
His grin turned into a grimace. Suddenly he didn’t like this game anymore.
“Sit.”
He obediently sat on the edge of the bed. You ran your hands down your torso, tugging your overshirt gently over your head. The tank top came next, then the bra, the pants...until you stood before him in only your black, lacy panties. His favorite pair, incidentally.
“oohhhh you naughty thing.” he said under his breath.
“No talking!” You snapped, and he shut his jaw. “I’m gonna ask yes or no questions, and you’re gonna shake your head or nod. Nothing else. Understand?”
Vigorous nodding.
“Good.” You touched the new bite mark on your shoulder tenderly, and dragged that finger lightly down your collarbone, brushing over your breasts. “Do you like what you see?”
He nodded, tongue running over his teeth lightly as he surveyed you. He reached out, but you slapped his hand.
“No touching!” He opened his mouth to argue. “And no talking!”
He folded his hands in his lap, red flush forming on his cheekbones.
“Good boy. Did you enjoy your little escapade with that slut?”
He shook his head, teeth sealed tight.
“Did you enjoy making me feel that way? Making me suffer?”
He hesitated.
“Tell the truth, Sans.”
He nodded, slowly.
You sighed, running your fingertips over your breasts and ribs, brushing down to hook your thumbs in the elastic of your underwear. His eyes followed your movement, and he leaned forward, a barely audible whine escaping him.
“Do you want me?”
He nodded quickly, his hands shaking as he tried to keep from reaching out.
You held out your hand. “Give it here.”
He looked at you, and it dawned on him what you wanted. Without a word, his hands came to his chest and a beautiful red heart appeared from underneath them. He held it out to you, and you took his soul in your hands gently.
“It’s so warm for such a cold-hearted cheater.” He flinched at your words, hand clutching at his chest where his soul had come from. You gently ran a finger down its middle, and a violent shudder passed down his body, and he groaned.
“You may speak.” You said, pressing your thumb into the middle and rubbing small circles.
“ah...augh...hnnn…” Was all he could manage, hands twisting in the fabric of his shorts as he doubled over, red-faced and moaning. “s...sweetheart...m...more…”
You pushed him over easily with one hand and climbed on top of him, parking your ass on his hip bones. You could feel the heat from his magic pooling underneath his shorts.
His hands tried to grab at you, but you slapped them away. “No! No touching!”
“but…”
“ No. ”
He dropped his arms to his side, gripping the sheets with a dejected whine. You ignored him, turning your attention back to the little heart in your hands. His eyes watched, filled with anticipation, as you brought the soul to your mouth, kissing it gently. A long moan grumbled below you. You kissed it again, swirling your tongue over a scar in the middle. He gasped, throwing his hands up to grab you, but stopped himself inches from your waist, and laid his trembling hands back down.
“What a good boy. Hmmm…” You tapped the soul rhythmically, eliciting spasms of pleasure from the skeleton beneath you. “Who do you love?”
“y...you...y/n…” He moaned your name erotically, and a smile worked it’s way onto your lips. His magic took form beneath you, and you could feel his member through his shorts. He was being a good boy, though, and even though you knew he wanted to he wasn’t rocking it against you. Instead he was trembling underneath your thighs, hands entangled in the sheets. The pink across his cheekbones betrayed his feelings.
You brought the soul back to your mouth again, moaning softly as you licked it slowly, slowly all over. His breathing was labored as he moaned and whimpered, calling your name meekly. Twice he brought his hands up, clenched his fists, and put them back down.
Lick. Sigh. Nuzzle. Moan. Kiss. Whimper.
When he was sufficiently undone beneath you, looking desperate and trembling all over, you decided to throw the good dog a bone.
“One hand.”
His hand shot up, grasping your ass and pulling you closer, then up your back and over your shoulder, your collarbone, your breasts.
“What do you want?”
“y...you…”
“But do you need me?”
His eyes looked as if half-lidded, and he was panting, touching you softly, as if it took all his strength not to throw you down and fuck you. “yes, stars yes…i need ya, babe. i need ya so fuckin’ bad.”
You gently bit the little heart, and he convulsed, throwing his head back as waves of pleasure rocked his body. His hips bucked and you allowed the movement. When you settled back down, the lump in his shorts was in front of you, pressing against you through the fabric. You hummed, feeling the warmth of his magic. The hand he was allowed was pulling against your hips, trying to surreptitiously guide you closer.
You looked down at his flushed face.
“Who’s a sorry monster?” You cooed, drawing a finger along his mandible.
“m...me, i am.” He looked so desperate for relief, to be touched. Just your finger on his jaw was making it grow right in front of your eyes. “i’m sorry, i’m real sorry babydoll...i’ll...i’ll beg, i’ll grovel, i’ll do anything…”
“And what are we not going to do?”
“fuck anyone else?”
“Ever?”
“ever.”
You drew your hands back to the soul and returned it to him, watching it melt into his chest. You bent forward, pressing the bulge in his shorts against you. He groaned, his hand tightening on your hip.
“You may touch, but not pull.”
His other hand flew up, grasping your other hip. You watched the agony in his eyes knowing he couldn’t pull you against him. You rocked against him gently, slowly, and he moaned, fingertips digging into the soft flesh above your pelvis.
“please...please, princess…”
You felt the wetness soaking your underwear, how much you wanted him...but you weren’t done.
“And what are we going to do if we see that little bitch again?”
His eyes widened in confusion, not sure of the answer. “t...tell her to fuck off?”
You rocked fast and hard, then stopped abruptly as he shuddered.
“No.” You leaned over him, so your faces were inches apart. “You’re going to apologize to her. You’re going to tell her that you’re sorry, and that for the rest of her life, she’s a wanted woman. If she so much as looks at you, ever again, I’m going to beat the ever-loving shit out of her until the blood from her nose and mouth stain her bleached hair back to it’s natural fucking color. Now take off your fucking clothes, asshole.”
The grin on his face was wider than you’d ever seen. He was naked and on top of you in seconds, practically purring in your ear.
“i love it when you talk dirty like that, sweetheart…”
“Shut up and fuck me, bonehead.”