Work Text:
San always knew Mingi held a certain kind of attentiveness for Yeosang. They all did, in some regard - their smiles a little warmer and voices a little softer with him. Where the others harbored pure affection, Mingi's intrigue bordered on something else entirely. A fact San especially recognizes, because he looks at Yeosang the same exact way.
Mingi thinks he's hiding it well - San thought he was too, before Wooyoung had practically begged him to stop staring at Yeosang with 'fuck me' eyes and just do something about it already.
He jumped the gun quicker than Mingi had the chance to, and despite him and Yeosang not officially dating, Mingi seemed to respect what they have together from a distance. But some things are difficult to change - like the certain fire in Mingi's eyes watching Yeosang perform his solo parts. How his hands lingered a little longer than necessary on Yeosang's hips when he's only trying to pass by the other carefully. The way his tongue darts out to wet his lips while watching Yeosang stretch for practice. San knows, because he's always looking, too.
He finds it doesn't bother him nearly as much as he would've thought. He and Yeosang never clarified being exclusive anyway, even if they naturally just kind of are. San couldn't, and wouldn't, stop Mingi from pursuing whatever he wants. Even if that meant Yeosang. But Mingi never takes, never gives, either. He just watches with a thin smile and his fingers unconsciously clenching at his sides.
And if Mingi won't say anything, there isn't the slightest chance that Yeosang ever will either. Even when his gazes linger just as long, his body unconsciously reacting to their slightest shared touches, and his easily vocalized physical appreciation for Mingi.
"Wow, Mingi's legs look so long here."
"I look so short next to you."
"Your hands are so big, Mingi."
If anything, San's interest is piqued too. It's one thing for him to have Yeosang nearly folded in half like he does now - their size difference isn't too significant, but Yeosang always seems so small caged under his arms. Having gone completely pliant and boneless to his unrelenting pace and unable to do much else but take everything San is giving him.
Looking down at his hands holding onto Yeosang's waist, all San can think about is the way Mingi's would entirely cover the expanse of skin. Picturing Yeosang in between the both of them, completely covered by their bodies and sinking into the pleasure surrounding him. San swears his dick twitches inside of Yeosang at the mere mental image of it all.
The words are falling out of his mouth before he even has half a mind to stop them, "I bet you wish Mingi was here, don't you?"
San hears Yeosang's sharp intake of breath, his eyes previously squeezed shut, flying open at the mention of a name he hadn't expected to hear.
His mouth opens and closes, failing to find any semblance of words before he manages a small, "W-what?"
"Don't play coy with me," San grits, a particularly hard thrust punctuating his words. It causes Yeosang's body to jerk upwards on the bed as a surprised moan falls from his lips. "I see the way you look at him. The way he looks at you, too."
Yeosang whines high in his throat, taking one hand from being perched on San's shoulder to hide half of his face. If he wasn't already flushed all the way down to his chest, San knows he'd be blushing too.
"Really?" Yeosang asks, impossibly softer. It ignites a fire in San’s stomach at the same time it causes his heart to twist painfully - Yeosang really has no idea just how desirable he truly is.
"Really," San promises. "He looks at you like something to eat. Like he'd completely devour you, if given the chance to."
Yeosang moans again, bringing his hand down to cover his mouth instead as if he's ashamed by the sound. San smirks at the response, feeling that familiar burning ball of heat growing inside of him.
"You'd like that, wouldn't you?" He mocks, bringing his face down closer to Yeosang's ear. His pace remains harsh and steady. "Having you between us both, fucking you senseless. What would Mingi think, hearing the way you beg to be filled up?"
Yeosang whimpers, his hands coming back up to brace himself on the back of San's neck. San can still sense his reserves about admitting his thoughts out loud, but his reactions are giving him away entirely.
"Yes," he concedes. His back arches off the bed when San hits the bundle of nerves inside of him with perfect precision. The gasp falling from his lips spurs him on to continue. "I want that. Both of you."
San groans, his head dropping to Yeosang's shoulder. He can feel his climax fast approaching, and by the telltale sign of Yeosang's whines increasing in volume, his clearly is too.
"Maybe he could fuck your pretty mouth for me while I take you like this. Quiet you down so you don't wake up the whole building," San groans.
The more his mind fills with images of such acts, his muscles grow more tense, his reserve seeming ready to snap at any moment. Under him, Yeosang shakes his head against the pillows.
"No. I want you both," he starts, his tongue darting out to wet his lips. "To fuck me. At the same time."
The pleasure was already building but Yeosang's unabashed confession is what finally does San in entirely. He comes hard, Yeosang following suit almost instantaneously. San collapses forward but braces himself by either side of Yeosang's head to stop him from dropping all of his dead weight on him entirely.
They catch their breaths in silence for a few minutes, San eventually finding the strength to pull Yeosang into his embrace as he lays down beside him, not quite ready to pull out just yet.
"I meant what I said," he says after a few more quiet moments have passed. San almost thinks Yeosang had fallen asleep in that time before he lifts his head to rest his chin on San's chest.
"I did too," is his hushed response. He glances up into San's eyes shyly, slowly melting back to his usual reserved nature.
If Yeosang could still openly admit his desires even once the haze had cleared, he must truly want it. San realizes he does too as he brings up a hand to card gentle fingers through Yeosang's hair. He doesn't know what this means for them - what any of it does, really, but he's open to figuring it out. One step at a time.
The first objective will be bringing Mingi on board.
It's not often that Mingi gets the chance to hang out with San and Yeosang alone anymore. They're wrapped up in each other so often these days that it's hard to find one alone without the other far behind. Which is fine; Mingi understands that they're still navigating the dynamic, of sorts, that they have together. Whatever it is they officially are, he doesn't ask - figures it's not his place to know either, despite how curious he may be.
He shouldn't be as interested in his close friends' escapades as much as he is. Keenly tuned in to their every shared glance or seemingly innocent touch. Mingi frequently catches the not-so-innocent touches too, given his continued observations. San's hand that always seemed to find Yeosang's thigh no matter where they were, slowly riding up higher and higher as the minutes wore on. Or the way Yeosang would press himself up against San's clothed groin when they think no one is paying them any mind.
Mingi was. Always is, really, despite knowing he shouldn't. But his attraction to Yeosang can't simply disappear overnight. If anything it only grows, as now when his mind drifts to thoughts of the older in such compromising positions, San is the one there putting him into all of them.
It's no surprise really that his long-time restrained lust for Yeosang extended to his current partner now. San is handsome too, and devastatingly so. They look amazing together, Mingi will be the first to admit, even if he greatly wished to be in San's position instead. He can push his selfish feelings aside for the sake of peace in their group. It's not like he's in love with Yeosang or anything - so Mingi believes it'll pass in due time.
(It hasn't yet, but he still holds out hope.)
When it's San who reaches out to him about joining in on their movie night plans, Mingi all but jumps at the chance. They're still his friends after all, and outside of schedules, Mingi hasn't seen them as often as he would like. It doesn't leave a bitter taste in his mouth like he once might've thought though, seeing them together all the time. Really, their relationship doesn't bother him at all - he only regrets holding out for so long about voicing his own feelings.
San had told him just to let himself in, having left the door unlocked for their expected guest, so Mingi does just that. He's surprised to find the hallway dark, and the living room too. He frowns, wondering for a moment if he had gotten the time all wrong. A quick glance at his last message to San confirms that not to be the case, so he's even more confused that his friends are apparently nowhere to be found.
"San? Yeosang?" He calls out, only to be met back with complete silence.
Mingi's mind almost jumps to wondering if something had happened, but then he hears what sounds like a voice travel down the hall. Migi pauses - maybe they just hadn't realized the time and were still hanging out in Yeosang's room. With a shake of his head, he makes his way down the hall, his steps slowing as he comes upon a door left the slightest bit ajar.
Now much closer, Mingi can tell apart the soft gasps and moans coming from the other side. Instead of announcing his presence like he probably should, Mingi's curiosity gets the better of him as he peeks through the opening. A gasp of his own nearly makes itself known but he quickly brings up his hand to stop any noise from being heard.
In the middle of the bed, Yeosang is lying on his stomach with his face shoved into the comforter. There are pillows under his hips holding his ass up in the air as San slowly works the biggest dildo Mingi's ever seen in and out of him. Yeosang's hole is positively gaping and swallowing the cock whole, his thighs shaking as whines of pleasure continuously fall from his lips.
Mingi can't tear his eyes away from the sight. It's so lewd, more than anything Mingi's own imagination ever conjured up when picturing Yeosang in such a situation. He feels himself stutter for air as his other hand runs down to cup the front of his jeans. His obvious interest is pressing hard against the fabric.
"More Sannie," Yeosang pleads, and Mingi swears his knees almost buckle. "Go deeper, please."
Mingi continues to palm himself through his pants as he watches the scene unfold, his arousal spiking. Something also about seeing Yeosang like this without him realizing it causes the burning ball of heat inside his stomach to flip.
"I'll give you what you want soon, pretty thing," San placates, his free hand rubbing Yeosang's hip. "Mingi just got here."
Mingi's lost gaze snaps away from the sight of Yeosang's ass for the first time when he hears his own name mentioned, and is even more surprised when he looks up to find San already staring at him. Instead of yelling or cursing him like Mingi might expect, San is smirking. He jerks his head to the side as a silent invitation to come closer.
Mingi hesitates for a moment, glancing back down to Yeosang to see his head now turned towards him, his eyes filled with unshed tears. It's as if the sight of his draws Mingi in, his steps unconsciously leading him to stand by the edge of the bed.
"See? Mingi's here now," San coos, patting Yeosang's behind softly. Mingi fidgets nervously, unsure of what to do or say in this moment. He almost has half a mind to pinch himself before San is speaking directly to him again. "See how well he's taking it? He wanted to be stretched open nice and wide to take both of our cocks at the same time. Does that sound good to you, Min?"
That certainly does knock any and all air out of Mingi's lungs. He does end up pinching his thigh as indiscreetly as possible to ensure what he's seeing is real and not just the best and most vivid dream he's ever had. He gulps as his eyes dart around, unsure of where to look and growing increasingly aware of the very blatant outline of arousal in his pants.
"Y-Yeosang wants that?" Mingi clarifies, not knowing what else to say. Yeosang... had planned for this? Wanted Mingi to fuck him, alongside side San? How could this not be a dream?
"Of course," San says simply. His hand moves to grab ahold of Yeosang's shoulder and pulls him up until his back is flush with San's chest. Yeosang cock is flushed red standing up against his stomach, precum dribbling from the tip. Mingi sucks in a breath. "He's been dreaming of taking you for so long. Just look at how excited he is."
San brings a careless finger down to flick the straining cock. Yeosang's body lurches forward with a cry but San pulls him right back upright against his body, an easy hold on his throat. Yeosang's eyes bore into Mingi's from where is head is lolled over San's shoulder. He looks so fucked out already.
Mingi shifts, still unsure of how to proceed. He would've never imagined ending up in this position tonight. His body - and dick - know what he wants to do, but his mind is having a hard time catching up. San seems to take pity on this.
"Strip," he commands plainly. For some reason, it reels Mingi's limbs to start functioning again, and he hurries to do that.
Both San and Yeosang are paying keen attention as he sheds himself of all his clothes in a hurry. Mingi feels too turned on to even feel ashamed, just driven by pure and unfiltered want. San hums, seemingly pleased with his cooperation.
Yeosang eyes his cock with clear hunger in his eyes, his tongue darting out to wet his lips, "You're so... big."
His tone causes Mingi's stomach to swoop. Mingi knew he was bigger than average, and given the brief glimpse he caught of San just a moment ago, he was no small feat either. The idea of Yeosang taking both of them at the same time, completely stretched to the brim has his skin thrumming with anticipation.
"Will we... fit?" Mingi has to ask, disbelief coloring his words. Pressed up against San's chest like he is now, as if put on display, Yeosang suddenly looks so small.
"Sangie will take absolutely everything we give him," San easily assures. Pausing for a moment, he turns Yeosang around to kneel between his legs. "Wanna see something, Min?" San asks, not waiting for an answer before he turns his attention to Yeosang. He takes ahold of the older's chin before nodding at him. "Stick out your tongue, puppy."
Yeosang doesn't hesitate. His jaw falls open easily, tongue lolling out with it. Mingi's breath hitches as San looks back at him.
"Spit in his mouth," he says casually, as if he's talking about anything other than the most vulgar thing Mingi's ever heard.
"What?" Mingi responds lamely.
San doesn't elaborate. Instead, he moves straight to providing a demonstration - his jaw moving around for a few seconds in tense silence before he leans over and properly spits into Yeosang's awaiting mouth. Yeosang doesn't even have to be told what to do next as he quickly swallows the fluid down without missing a beat.
Mingi stares, stunned, while San only smirks at him, "See? He loves it. Already wants more."
True to San's word, Yeosang's lips part again just like before, his big brown eyes searching Mingi's as if he's silently pleading for the same rough treatment. How could Mingi ever deny him that?
With more hesitation than San, Mingi leans over Yeosang's face as the salvia starts collecting in his own mouth. Trying not to overthink it, he attempts to do exactly as San did - aiming for his spit to land directly on Yeosang's tongue. It falls as he intended, and Mingi watches with keen interest as Yeosang's eyes flutter close as he appears to revel in the feeling. Mingi's gaze drops to where his throat bobs once he eventually swallows the liquid. Mingi swears he feels faint.
"Please," Yeosang begs again, his eyes peeling open to reveal his dazed expression. "Just fuck me already."
Mingi gulps, his knees suddenly feeling weak. He scrambles to get on the bed in front of Yeosang, hands fisting the sheets as he comes to rest on his knees. He's unsure of what to do before Yeosang is deciding for him, falling forward to capture Mingi's mouth with his own.
His hands find purchase on Mingi's shoulders which gives Mingi the assurance to let his own explore in the way he's always desired. It's almost impossible to focus equally on the feeling of Yeosang's trembling body underneath his fingertips and his needy, hurried kissing. His sounds are something else entirely - high-pitched whines escaping his throat as Mingi assumes San begins pulling the dildo out of him. Yeosang's fingers grasp helplessly at the hairs on the back of Mingi's neck and Mingi eats up his every delectable little sound.
When they part for air, San pulls Yeosang back against his chest once more. One of his hands reaches out with a palm covered in lube to coat Mingi's length, who hisses at the contact from the mix of cold substance and the long overdue touch finally where he's needed it most. Even just from San's few sloppy strokes Mingi already feels embarrassingly close. He wills himself to hold off the feeling until he's actually inside of Yeosang.
"Lay back against the pillows," San instructs him.
Shakily, Mingi does, his muscles tense with anticipation. He can't hardly believe the sigh in front of him - San helping Yeosang onto wobbly knees to hover over Mingi's lap. He holds his cock in place as Yeosang slowly sinks down onto him, his mouth falling open in a long exhale of air.
"Fuck," he whimpers, gripping onto Mingi's forearms.
It takes everything in Mingi to not start bucking into the warm heat. Yeosang swallowed him up so easily with San's thorough preparation, and the thought of another cock filling him up alongside Mingi makes him realize it will definitely be a tight fit.
San takes notice of this too, "Damn, Min, you're even bigger than I expected. I should've stretched him more."
Forehead resting on Mingi's shoulder, Yeosang shakes his head quickly, a pitiful cry bubbling at his throat.
"Please, Sannie," Yeosang practically sobs. "I can't wait any longer."
Groaning, San leans forward to place an all too gentle kiss on Yeosang shoulder, "Okay, baby. Just tell us if it gets too much, yeah?"
Quickly, Yeosang nods, pushing his hips back as an invitation for San to get moving. Mingi moans as his hips stutter, hardly able to contain himself from fucking into Yeosang senselessly.
Luckily, San doesn't make either of them wait any longer. He settles in between Mingi's legs and even without being able to see, Mingi can feel when he presses himself up against Yeosang's entrance. He also hears Yeosang's breath catches in his throat.
Mingi shushes him softly, "Just relax."
Figuring words could only provide so much, Mingi shifts to giving Yeosang a distraction instead. He presses his lips against Yeosang's face, trailing kisses down his neck to pay careful attention to the expanse of skin there. Yeosang keens at the onslaught of sensations, naturally tilting his head back to give Mingi more space to work.
San is still slowly pushing himself inside, and Mingi can feel every inch of San's cock slotting in alongside his. It feels like forever until he finally stops - Yeosang squeezing the near life out of them both as his body attempts to adjust to their combined size.
He mumbles an incoherent string of curses and cries as his head falls back to resting on Mingi's shoulder. San's hands rub comfortingly up and down his sides.
"Take your time, baby," San reassures him. He presses firm kisses up Yeosang's spine to in between his shoulder blades. "How does it feel?"
Yeosang whimpers, his lips moving against the skin on Mingi's neck, "Really good." His voice sounds almost a touch lower, clouded with clear arousal. "Never felt s-so full."
His lisp seems to slip heavily between the words, eyelashes fluttering as he blinks the blurriness in his eyes away and he pushes himself back up. The flush on his cheeks extends down the expanse of his neck and chest, making for a devastatingly beautiful picture hovering over Mingi.
"You're so pretty, Sangie," he feels the overwhelming need to say. His brings his thumb up to swipe away the lone wetness forming underneath Yeosang's eye.
Yeosang sighs, melting to the touch, "You can move now."
Mingi watches his expression carefully for another passing moment before clarifying, "You're sure?"
Yeosang nods, rocking his hips back to prove his point. It draws a groan from both San and Mingi who waste no further time in giving Yeosang everything he wants.
Mingi let's San set the pace and then tries to match his thrusts with his own. It's uncoordinated at first, neither of them used to the position but the pleasure is instantaneous. With San's cock sliding seamlessly alongside his, and Yeosang's tight warmth surrounding them both - Mingi's never felt anything like it.
His noises grow louder with every pump of their cocks as they all get used to the feeling. San's eyes are squeezed shut just over Yeosang's shoulder as he groans in pleasure, and Yeosang struggles to keep himself upright from the overwhelming sensations.
His mouth is hanging open as his body unwittingly surrenders to pleasure. Mingi grabs ahold of his waist to keep him steady, groaning at how small Yeosang looks buried between them.
"Fuck, look at you," Mingi can't help but voice his praises. "Could watch you fall apart like this all day."
Yeosang whines, tears falling freely from his cheeks. His legs have almost entirely given out holding him up and he's unable to do much else but take everything they're giving him.
"You're squeezing us half to death, Yeosang," San almost growls, his pace picking up. Mingi finds it easier this time to match his thrusts, his desperation beginning to bleed through.
Yeosang's body jerks at a particularly hard thrust, and continues to spasm with every repeated onslaught on his prostate. His cries turn into full-body sobs now, and unable to resist the lovely sight of his red-rimmed eyes Mingi pulls Yeosang down to lick the wetness away.
Glancing down at where they meet, Mingi can see the clear outline of his and San's cocks pumping in and out of Yeosang. Groaning at the sight, he takes hold of Yeosang's wrist to press his fingers against the bulging of his lower stomach.
"Feel that?" He grits out, feeling himself teetering just on the edge. "How much we're filling you up? You're taking us so deep."
Yeosang whimpers, tears continuing to slip down his cheeks as he loses the ability to even form words, mind gone completely numb from ecstasy. From the erotic image alone Mingi is unsurprised when he comes first, a guttural moan falling from his lips as he releases deep inside of Yeosang. He refuses to let his pace waver though, spurred on by determination to see the way Yeosang's face contorts with pleasure when his own high washes over him.
Mingi can tell it's happening once Yeosang clenches them impossibly tighter, his brows furrowing and lips parting in a silent scream as his body tenses with the intensity of his release. He can feel the shudder from San when he follows quickly suit, absolutely falling apart under the vice grip Yeosang has on them both.
Yeosang goes entirely boneless between them, all but collapsing into a mess of tired limbs onto Mingi's chest. San slips out in favor of not piling on top of them in his own heap of exhaustion, Mingi and Yeosang both whimpering from the sensitivity. The only sound filling the air for a few passing minutes is their uneven breathing as they come down from their respective highs.
"That was..." Mingi can't find the words to express how satiated he feels. "How long have you been planning this?"
"I only just got Sangie to admit it," San starts as Yeosang blindly reaches over to wack him with a weak arm. San grabs a hold of his wrist to intertwine their fingers instead. "He's been into you for years, though."
Yeosang gasps, offended, "Sannie!"
Mingi's eyes widen, "You're telling me I've been missing out on this for that long?"
Yeosang whines, shoving his face back into the crook of Mingi's neck. San shakes with quiet laughter beside him, his thumb rubbing over the back of Yeosang's hand as a small apology. The moment feels so oddly domestic, and what can only be described as right to Mingi.
"We can make up for it," Yeosang mumbles into his skin softly. The brush of his lips causes Mingi's hair to stand on end. He spares a curious glance towards San, who is watching them both with a faint smile playing on his lips. Serving as a silent confirmation that he, too, would like for this to be more than a one-time thing.
Mingi will certainly hold them both to it.