#S. Matteo | Explore Tumblr posts and blogs

iniquitousyearning · 5 months ago

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SLYTHERINSLUT0’S KINKTOBER

october 4th. mattheo - virginity loss / corruption kink.

PART TWO | kinktober masterlist. | 2024.

summary: pls read part one first for a lil buildup. also. im laughing at myself bc there was a perfectly good bed…right there…

warnings: 18+, SMUT MDNI, virginity loss, PIV, so much dirty talk, so much patience from mattheo, (more of a realistic virginity loss bc it’s not always easy), praise!!!!, slight degradation, fingering, multiorgasm, handjob, best friends lil sister trope.

Mattheo Riddle was so accustomed to this. The pulse of adrenaline in the dead of night, the quiet hum of anticipation stretching every second longer than it needed to be. You weren't naive to that, not to him, nor the danger he carried so effortlessly in his stride. He wore it like a second skin.

But you—you were not accustomed to it. Not to any of this.

So when you pushed open the door to the room of requirement a little over ten-minutes later, you hadn't been sure what you were expecting to find. Something darker, maybe. More foreboding. But when the room revealed itself before you—silent, draped in soft moonlight that pooled over the bed with a window wide and open, spilling that pale silver fog across the floor—you almost laughed.

Too perfect. Too on the nose, like the castle itself had been watching you both for months and had decided this was the moment it would indulge you.

"You're late." Mattheo's voice cut through the quiet.

His back was to you, suit jacket discarded on an old oak desk against the wall, dark curls falling just above his collar as he stood by the window, eyes fixed on the lake. The moonlight made the ripples dance, just like the tension in the room.

You took a step toward him, silent.

He turned, finally. His eyes met yours and you saw it—the hesitation, the way his gaze moved over you, slow, cautious. He took in the way the light draped itself over your shoulders, moving lower—and it was as if for the first time, he allowed himself to see you fully, all the details he had so tried to ignore, now right in front of him. He drank them in.

You gave him a small, nervous smile, hoping it would ease the weight of his stare. "I didn't realize you were the type to keep track of time."

He moved closer, but not close enough. Not yet. His breath was tight, chest rising and falling too fast. The space between you felt like a chasm, though it was barely there at all.

"You've a lot to learn, little girl," he teased, that familiar smirk tugging at the corner of his lips, though it did nothing to mask the conflict in his eyes. It was meant to disarm you, but it only made the air heavier. His jaw tightened. "You're sure about this?"

"Quite sure," you breathed, stepping closer, close enough to admire the sharp line of his jaw, the soft stubble. "You're the one who's hesitating."

"I'm not hesitating," he muttered, though the roughness in his voice betrayed him. He knew he shouldn't be here, shouldn't be doing this with you. His best friend's little sister. He wanted to give you every chance to stop this, to walk away. "Just trying not to rush this—rush you."

You let out a small huff, your hand moving up to find his chest, feeling the rapid thud of his heartbeat beneath your fingertips. Mattheo Riddle was nervous.

"You've been making me wait for months," you whispered. "I don't think a little rushing would hurt."

He swallowed hard, his eyes locked on your hand as it trailed over his chest, lower, teasing. Every touch was a flame against his skin, every breath between you a match struck in the dark. He wanted you, more than anything, but the weight of it—the wrongness, the danger—clawed at his conscience.

His hand caught your wrist, intending to stop you, but his fingers lingered against your skin. Frozen.

"We shouldn't be doing this," he muttered, the words thick in his throat. "Your first time should be—"

"My choice," you interrupted, pressing closer, your body flush against his, your lips brushing his jaw as your hand slid lower, teasing the edge of his belt. "My virginity is mine to give, Mattheo. And I want to give it to you."

He shuddered, your words settling, sinking into the dark space that held you both captive. His hand found your hip, the other threading through your hair, gently tugging your head back to expose the soft skin of your neck.

"You’re not thinking straight," he rasped. "You'll regret this..."

But even as he said it, his hands tightened, pulling you impossibly closer.

"I'll regret nothing." Your fingers slipped lower, grazing his crotch, moving with nothing but instinct and need. Biting your lip, you felt the outline of him, hard and aching under your palm, and squeezed—he grunted, snapping his hips, and you throbbed. "Shit, Mattheo..."

"You are—fuck..." Mattheo's voice was a ragged breath, the words drawn out like he'd been holding them back for months. "...such a little tease."

You let go as quickly as you'd squeezed, and he growled against your skin, fingers tightening in your hair. Your hands found his face, pulling him in, crushing your lips to his. You moved with intent, pushing him back until his thighs hit the edge of the desk, and he groaned again—this low, guttural sound that sent a thrill through you.

You smirked into the kiss, tasting his frustration, savouring the way his defences cracked open. When you pulled back, his chest was heaving, lips swollen, eyes dark with want.

"I learned from the best," you whispered, teasing as your fingers slid down, finding the buckle of his belt. He watched you, every breath uneven, as you worked at the latch, pulling the leather free. "You've had months of fun tormenting me," you continued, moving to the button, the zipper. "Kissing me, only to say it was a mistake. Grabbing my ass every chance you could. Talking sweet when my brother wasn't looking..." your smirk deepened, and you looked up at him through your lashes. "...it's my turn now."

His pants sagged around his hips as you undid them and he cursed under his breath—his brain was struggling to catch up, like he couldn't believe the sudden shift, couldn't quite fathom the boldness with which you undid him.

Until—his hands were on you, spinning you around, your back hitting the desk with a thud.

"You think you're in control here?" His fingers slid up your hips, dragging your dress along with them, baring your skin to the cool air. "You think you have any goddamn idea what you're doing?"

You shuddered—you'd never seen him like this before—there was something feral in the way he moved, now, something sharp in the way his hands worked. His thumbs hooked around your panties and in one swift motion, they were gone—torn down your thighs before he urged you back onto the desk, parting your legs with his torso.

You were breathless, chest heaving, pulse thrumming wildly. His presence consumed the room, and for a moment, it was all you could focus on—the intensity of him, the raw, unfiltered hunger in his eyes.

You stared up at him, mind empty, until—

Smack.

His palm came down on your inner thigh, not hard enough to hurt, but enough to send a jolt of sensation straight to your cunt. Your skin stung from the contact, but that wasn't the part that made you gasp. It was the heat, the way it surged through your veins, flooding your abdomen in a slow, aching pulse. You liked that.

"I asked you a question." His lips brushed against your ear, breath warm as he leaned in. "Two, actually."

You couldn't think, mind swimming—the press of his body, the rough timber of his voice, the weight of his hands as his fingers teased, climbing higher, brushing closer to the ache between your thighs. You sucked in a breath, trying to recall what he'd asked, trying to focus anything but the fire he was lighting in you—

But then, his fingers slipped further, closer, just barely brushing your slit, and your hips jerked involuntarily, chasing that touch.

"No—I don’t—“ the shame in the answer barely mattered. His fingers were so close, so close. "Gods—I just know I want you—"

"That's all you think about, isn't it?" He smirked, lips falling to your neck, tongue tracing the places he knew would wreck you, each soft, wet press making you whimper despite yourself. "You don't care about anything else..." his fingers slipped lower, dipping between your folds—and you cried out, shameless, the sensation unlike any other you'd ever felt. "…not the consequences, not the risk...you just want me…”

Your nails dug into his back and he sucked in a breath through his teeth, wetting his fingers in your arousal before gliding back up to your clit and tracing over it.

"Oh—Gods—" you whinged, moaning into his shoulder.

Mattheo’s hands were experienced—that much was certain. Those fingers knew exactly how to move, precisely how to trace light, delicate circles over your clit that made you twitch, squirm— nerves stripped as you took in the new sensation. It wracked every inch of you, and you could feel him savouring your helplessness, drawing out every ounce of tension that had been building between you for months.

“You’re soaked.” You could hear the disbelief in his voice. “...filthy little thing for me, aren't you?"

"Gods, Mattheo, yes—" your eyes rolled, thighs twitching against his hand. "I am—ohh—"

"Yeah?" His tongue traced a slow, wet path up the side of your neck, teeth dragging over your pulse. "You like this?"

His words were enough to make you want to scream, but no sound formed—just a low, broken moan that spilled from your throat, raw and shameless.

"Answer me," he murmured. "You ever orgasm from this before? Hm?"

"No—" your voice choked, trembling as you squeezed your eyes shut, unable to look at him, something like shame pooling in your stomach. "Oh, fuck—"

"No, what?" His fingers pressed harder, circles growing faster, more insistent, and his voice—Christ, his voice— "I asked you two questions, little slut. Keep up. You wanted this."

"Yes—mmf—I like it—" you whined, the words a desperate spill from your lips, too flustered to form anything coherent. "And no—Gods—you're the first to...to touch me like this..."

He figured as much but the admission tore through him nonetheless, his teeth sinking into your shoulder with a groan—not enough to hurt, but enough to leave a mark, a bruise, a reminder. His hand dipped lower, a finger pushing inside you without warning, pressing deep into your slick heat, and you cried out, your body tightening, pulsing around him, vision swimming.

"And this?" His voice was a smirk against your skin. "You let anyone else inside you like this?"

You knew he already knew the answer. You both did. He was reveling in it—the way he had you, trembling, helpless. You'd never heard him like this, never heard him so crass, so unfiltered, and the way he spoke made your whole body flush with heat.

"No." The word was a strangled moan, barely a breath. "Gods—Mattheo—you already knew that—"

He crooked his finger inside you, and your back arched, the stretch unfamiliar yet mindnumbing, his thumb working your clit. You felt teeth nipping at your earlobe, a hum into your eardrum—his body thrumming with the satisfaction of finally, finally letting himself have you where he wanted.

"Perhaps I did." He added another finger, curling them inside you, his teeth scraping along your neck in a smile. The groan that slipped from your lips was desperate, pained in its pleasure, your body reacting to every new inch of him. "Fucking hell—you can barely take two..."

Your head shook, words failing you. "Gods—Mattheo—I...fuck..."

A low grunt rumbled from his chest, his fingers moving quicker, slick with the evidence of your desire. "Feels good?"

"Yes—" you moaned, breath hitching, vision blurring as he pumped his fingers in and out, building something inside you that you couldn't name, something new, something overwhelming. "I feel—oh, gods—something...happening—"

"You feel something?" His voice was mocking, drenched in that innocent, teasing tone that had you falling apart. "Yeah? What's happening, princess?"

You couldn't find breath, couldn't form the words to answer him. The pressure inside you was mounting, intensity unbearable, your body tense and straining toward an edge. You clung to him, breathless, desperate for more, desperate for something, anything—

"I don't—" your voice broke as his fingers curled deeper, wetness flooding between your thighs, his thumb relentless. "Pressure—fuck—so much—"

He nodded. "Yeah? Pressure in that pretty stomach? Feels fucking good, doesn't it?"

"Fuck—yes, yes," your lids fluttered. "S’good—"

"You're so close." He watched you, drunk on your downfall, and smirked as you neared the edge. "You're going to cum for me."

Sanity shattered in your throat—words trapped, swallowed by the tension, leaving only the soft, unbridled whimpers you once might've once found embarrassing. But there was no shame now, not when you were this close, the pressure coiling tighter in your core, ready to burst.

"Ohh—" you managed, lungs sputtering, head tipping back. The sound of your voice, the way you moaned, was foreign, unfamiliar to your own ears. "Gods—oh fuck-"

"I know," he cooed, sweet like sugar. "I know."

You were a mess. Too close, too overwhelmed—everything was him. His scent, the heat of his skin, the feel of his fingers working that magic that had your body convulsing before you could even cry out, before you could process the way your vision blurred with the force of it. The climax hit like a wave crashing over you, and your moans were swallowed by his kiss, his lips on yours the second your body tightened, shaking against his hand.

He was relentless, rough and insistent, kissing you like he wanted to devour you whole—drowning out the world as your body pulsed around his fingers. You’d never felt such an intense sensation, lava coursing, replacing the blood in your veins. His breath stuttered against your mouth, a low groan vibrating through him, the sound making your spine tingle.

"F-fuck," he muttered, pulling his fingers from you, glistening and wet. "Messy little thing."

The words sent a shiver through you, not just from their meaning but from the way he said them, like something perverse, intimate. Your chest tightened with the warmth of them.

"You—" you panted, trying to find your voice. Blinking through the haze of lingering bliss. "You can't say things like that."

"Why not?" He chuckled your name against your neck, lips brushing a path to your ear. "Because you might fall in love with me?" His teeth grazed the sensitive spot under your lobe, along your jawline. "Oh wait...you already have."

"Shut up," you whispered, stomach flipping at the way he said your name, the way it dripped from his mouth like honey. "Have not."

"I've known for a while, you know," he mused, his voice so low, so quiet. "Don't think I haven't seen it—the way you look at me." He kissed your skin again, working his way up, each press of his lips something sacred, moving closer to your mouth. "The way you can't get enough of me."

You could kill him for it, for the way his words sunk into your bones, making all the feelings you've buried rise to the surface, pulling you under. He just had to go there—had to milk every inch of your composure out of you, because it's not enough for him to have you disarmed physically—sexually—he needed to have you disarmed emotionally, too.

Perhaps the worst part of it all is how right he was. Arrogant bastard.

"Stop talking," your hand drifted down, grazing the bulge in his pants, your fingers slipping under the waistband, rubbing him through the thin fabric of his boxers. It was reckless. You've never done this before, but God, you wanted to. "Stop talking and teach me."

The room tilted—the world off its axis. His breath caught, choked in his lungs as he grabbed your face and pulled your lips to his—his kiss wild, his tongue insistent, running along your gums and wrestling with yours for control.

"Fuck," he groaned into your mouth as you tugged his boxers down, freeing him, your hand wrapping around him. Hot. Hard. "Wrap your fingers around it, princess. Gentle strokes. Just like that."

Your heart stumbled at the sound of his voice, thick, raw and open. You tightened your grip, stroking him slowly, experimentally, and he hissed through his teeth, a groan vibrating through his chest.

"You're so big," you murmured, forehead against his, the words spilling out without thought. "So thick..."

"Fucking minx," he moaned. "Stroking me and telling me how big I am—fuck—you're not as innocent as everyone thinks."

"Only you know this," you whispered, your hand moving in slow, deliberate strokes, pulse soaring as he groaned. "Does it feel good, Matty?"

"Fuck—Christ—" his breath was jagged, words ripped from his throat like they barely wanted to come out, hips jerking mindlessly. "Tighter, mm—little tighter—"

Your cunt throbbed—each whispered invocation of a god not his own, of something he didn't believe in, forced a shudder through you. That's how you knew. Knew how lost he was. He’d no mind left at all if he was muttering muggle gods.

"Like that?" Your fingers squeezed around him, your gaze burning into his as you looked up through fluttering lashes.

His face was a storm—flushed, eyes half-shut—but at your voice they opened and flicked down to yours, and for once, there was no arrogance, no mockery in that stare. Just raw, primal need, burning so fiercely it made you ache. His hips rocked, desperate for more. Painfully. A hole in his chest torn wide open for you to see, and he didn't care. Couldn't care.

"Yeah—shit—just like that," he gritted out, grip on your hips bruising, but you welcomed it. Needed it. "Fast learner, aren't you?"

"You're a good teacher," you whimpered, a sound that was barely yours as his fingers slipped between your thighs, finding your slit, teasing you open again. "Oh—"

"You've always been a little teacher's pet," he groaned, thrusting into your hand as he slipped a finger inside you. The stretch made you wince, pleasure and pain blurring into something that sent sparks behind your eyes. He watched you, gaze molten. "Fuck—it’s gonna hurt, you know that, right?"

The ache spread through you, but you didn't flinch. "I know," you whispered as his thumb found your clit, making you gasp. "I trust you."

"I know you do." His voice dropped, eyes dark and soft at once as he pushed another finger inside. "You know you’ve always had me wrapped around your fucking finger. You know I care about you—“

His words were too much, pressing on something fragile inside you, and you pulled him into a kiss to shut him up—deep, desperate, drowning. Your hand tightened on his length, the heat between you flaring, and you moaned against his mouth, shaking with the need for more.

"I want you," you breathed, each syllable shivering on your lips as you clenched around his fingers. "I've wanted you for months—"

Months? No, it had been years. Years of wanting, needing, watching from afar, heart in your throat. Years of avoiding anyone else because no one was him. You knew he’d felt the same and it killed him. It wasn't logical, wasn't supposed to be like this—not with you, not now, not his best friend's little sister, not him whispering sweet, dangerous things while knuckle-deep inside your virgin cunt.

It was as if you both shook those thoughts from your minds at once. You’ll think about the implications later.

"You've got me," he rasped, hips grinding involuntarily against your hand. "Just—fuck—don't hate me after this."

Hate him? The very idea was laughable, absurd. You could never hate him. Not even in those moments you tried, not even when he deserved it.

"I could never hate you," you murmured, drawing him closer, lips trembling against his. "Just—please—"

Something shifted in his eyes, and he knew. Knew what you needed. What you both needed. You were vulnerable, trembling, but you trusted him—completely. You’d been in his life for so long. You knew he’d never hurt you. He could see it your eyes, the trust, the in the way your body bent to his touch.

"Alright," he said softly, a hand running up your body to cup your face, thumb brushing your cheek. "Alright."

His fingers slid out of you, leaving you bare and breathless, and you swallowed. This was really about to happen.

"Lay back," his voice cut through your haze. "Legs to your chest."

The command wrapped around you like a vice, tightening the anticipation, and you fell back on your elbows, staring up at him as you raised your legs. Vulnerability crept in, making your thighs tense, but Mattheo was there, spreading you open with firm hands, pressing himself against your slick. His eyes were locked onto yours, all that self-assurance gone, melted into something more human—something raw, unguarded.

You could feel it; the vulnerability of this moment stretched between you both—the distance you'd maintained for so long, the careful walls you'd built, were nothing now. He was in too deep, and so were you.

"Stop me at any time," he whispered, his voice a raw rasp, eyes meeting yours. "Just breathe.”

He leaned down until his lips ghosted over yours, and you kissed him like the world might collapse if you didn't. He guided himself against you, the press of him at your entrance an unbearable ache. He was hot, hard, huge—and despite the wetness slicking down your thighs, your body resisted, too tight, too unsure of this.

You whimpered, instinctively trying to pull away, but he stayed, pressing kisses to your hair, your temple, whispering something that sounded like comfort but burned like fire. It hurt more than you expected, more than any of the fantasies you had dared to entertain.

Doubt curled through your chest, what if you couldn't take him? What if—

"M-Mattheo..." his name broke in your throat as you clutched his arm, nails digging into his skin. He tried to push in again, but your body resisted. "It—you—you can't fit..."

"Shh," his lips ghosted over yours, his hand slipping through your hair, trying again, moving slow, controlled. "You're just—so goddamn tight—"

The way he said it sent a spark through your veins. It was filthy, shameless, and it lit you up from the inside, despite the pain. No one had ever spoken to you like this. You swallowed the lump in your throat, tears pricking as he tried to work you open.

And then—he was in.

"I-it hurts," you hissed—pain lighting up your spine as he worked his cockhead inside you, pushing against the resistance of your walls. His breath came in sharp, ragged bursts, each inch a battle. The pressure was unbearable, the sting so sharp it was paralyzing. "Oh, fuck, Mattheo—"

He groaned, a sound from deep within his chest, his head bowing, sweat creeping over his brow.

"Shhh, I know—I know..." he murmured through shredded cords, fighting to maintain control as his hips paused, barely halfway in, just enough to make you feel like you might break. "S'okay...you're doing so good..."

It was overwhelming—the fullness, the ache that felt like it might split you in two. And yet, beneath the pain, something else stirred. His words, soft and rough all at once, made the sensation bearable, turned the hurt into something else. You focused on his voice, on the way he stroked your hair, the way he held you like you were the most precious thing in the world.

"Why—mmff—gods..." you could barely speak, the words tangled in your throat. "Why do you have to be so big—"

A strangled laugh escaped him, though his eyes stayed shut tight, his jaw clenched—cock twitching inside you.

"I don't—fuck—know." His fingers brushed your lips, covering your mouth gently. "Don't go talking like that—not right now—"

You might have laughed, too, if your body wasn't so taut, strung tight with tension and pain and something far more profound. He was barely inside you, his words making your insides clench, drawing another groan from his lips at the squeeze.

His hand held your jaw, palm pressing lightly over your mouth, enough to breathe, to speak—

"Why—" you knew what he meant, knew the warning in his eyes, but you couldn't stop yourself. "—not?"

His breath hitched. "Because—" he swallowed hard, words coming through gritted teeth, his fingers tightening around your jaw, a warning in his grip. "Because—fuck—your mouth will get you in trouble."

Oh. That was what he meant.

"But—oh fuck—you're so...big..." the words slipped out before you could catch them, a disgruntled moan falling from your lips as he sank all the way in, filling you so completely it was dizzying. The pressure, the heat, the sensation of being pried open—it was all too much, and you cried out, unable to stop the sound from spilling out. "Ohhh—so big—"

"I said, fuck," he cursed, hand clamping firm over your mouth now as his body shuddered, as he ground his hips gently into yours. "—don't say that."

It was too late. You didn't need to say anything further. He could feel it—he could feel everything in the way you clenched around him, barely letting him move—so goddamn tight it was almost painful—he could feel it in the look in your eyes, in the trembling of your body beneath his.

"I can feel you thinking it," he grunted as you squirmed beneath him, every movement making him twitch inside you, drawing another choked groan from his throat. "Merlin sakes—"

You knew he wasn't used to this. To slowing down, to drawing out the tension like this, to the maddening slowness of every motion. He wanted to lose himself, to break you open hard and fast, to take and give and take again until both of you shattered into something unrecognizable. But he couldn't—not with the way your eyes glistened, not with the way you gasped and whimpered as he filled you.

"No talking," he sucked in a breath against your neck, his hips rolling into yours in slow, unbearable waves. "Only if you need me to stop."

He was breaking. So were you. Every thrust was an exquisite kind of torture—an ache that twisted and stretched, dulled only by the flick of his fingers against your clit. His lips pressed along your neck, kissed along the line of your jaw, groaning with each deep, patient push, carving his way into you as you clung to him, your mind floating through the fog of pain into something different—something overwhelming.

Your head fell back. “Oh—Oh gods—“

Each gasp felt like it might be your last as that something built deep inside you, tight and unfamiliar, an ache that didn't hurt but begged to be released. And he felt it too—Mattheo felt it, the way your body pulsed beneath his, the way you tightened around him like you couldn't bear to let him go.

"Bloody fuck—are you—are you going to—" his words were ragged, broken. He couldn't finish the thought, couldn't hold himself together. "Are you—"

“Mattheo—” your voice trembled, a breathless moan as your back arched, pressing into him, your body seeking more. The pain was null now, replaced by an overwhelming pressure, something tight and aching and good—you felt every inch of him inside you, every pulse of his cock as he moved, slow but relentless. “Mattheo—oh gods—”

"Fuck—" he bit down, teeth sinking into your neck as his fingers swirled your clit in rhythm with his thrusts. "You're gonna make me—"

You choked because there was no space for words, no breath for anything but the raw sound of your bodies—moans, gasps, ragged inhales tangled together as you both hurtled towards something inevitable. The light of the moon radiated the man above you and that was all you could register other than the rising crescendo of your climax—something so intense it scared you, almost broke you apart—your body seizing, trembling, as his fingers pressed harder against your clit, as he thrust deeper.

And then, there was only one more blink until you shattered beneath him, the orgasm tearing through you in oceanic motion, muscles clenching around him so tightly he could barely move—and then he was there, too, his body jerking as he groaned into your skin, his release ripped from him in jagged gasps as you milked him without mercy. He slumped on top of you, fingers digging into your skin, the two of you pulsing together in the aftermath, the room spinning, your bodies still trembling from the force of it.

The world was slow to return, the roar of sensations fading into something quieter, softer. The weight of him on top of you was grounding—his forehead pressed against the crook of your neck, his chest heaving as he caught his breath. Neither of you moved for a long while, just basked in the silence, kind that settled in after something irrevocable had passed between two people.

And then, Mattheo pushed up, enough to meet your eyes. Your chest ached at the softness inside his own.

“Are you—” he swallowed as he drank you in, the sheen of sweat on your skin, the flushed cheeks. His words hung in the air as if he didn’t know how to finish the question.

“I’m okay,” you nodded, voice hoarse. “I’m good.”

Mattheo nodded too but didn’t move, still buried inside you, just taking you in. Then, gently, he shifted, pulling back with a slow, careful movement that made you wince slightly. The second he’d pulled out, you felt different—more aware of the vulnerability you’d just laid bare, more aware of the line you two had just obliterated into absolute shambles.

“You sure?” he asked, a flicker of something deeper in his gaze—

You nodded again, the smallest smile pulling at your lips, though your heart was still racing, the enormity of it all sinking in.

“Yeah,” you whispered. “I’m sure.”

His jaw tightened, his hand brushing a strand of hair from your face, his thumb lingering on your cheek.

“This changes everything, doesn’t it?” His voice was barely audible, like he didn’t want to admit it out loud.

Of course he was thinking it too—how could he not? This was no longer something you could pretend didn’t exist, no longer something you could hide behind banter and stolen glances and secret kisses.

“Yeah,” you breathed, fingers tracing the line of his jaw, feeling the tension there, the heat still radiating from his skin. “It does.”

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iniquitousyearning · 5 months ago

Text

SLYTHERINSLUT0’S KINKTOBER

october 4th — virginity loss / corruption kink.

PART ONE | kinktober masterlist. | 2024.

pairing: mattheo riddle x berkshires!sister

summary: mattheo’s conscience can only hold him back for so long.

warnings: 18+, hogwarts uni (putting this even tho it’s obvious), jealous mattheo, flirting, tension tension tension, “we can’t do this” type of vibe, “your brother is right over there” type of vibe. bestfriends lil sister trope. part one of two.

Morality—what is it, really? How is it measured? Is it a linear scale? Could someone be morally sound yet sometimes make an exception when the situation called for it?

Perhaps it's subjective. Anything that falls outside of the law, that is.

Mattheo forced a breath from his lungs, the drink in his hand was tasteless, some watered-down excuse for a cocktail. But that didn't matter, not really—what mattered was the way you kept laughing, the way your hand lingered a second too long on that random bastard's sleeve. The sight made something concerning coil tight in his chest, but he stayed where he was, back against the wall, sucking down drinks like he'd been tasked to it.

God, this was stupid. Morality. Right and wrong. He knew the difference, of course he did. Just because he was a Riddle didn't make him a monster. Not yet, anyway. But that line, the one between you and him—the one drawn so clearly in the sand—was practically mocking him with its absolutes and daring him to cross it. Forbidden, off-limits, the one thing he shouldn't want.

His best friend's little sister. The good girl. A virgin, no less.

"Riddle—you coming?"

Mattheo's head jerked slightly, but his mind was miles away.

He waved a hand. "I'll catch up in a bit.”

Malfoy and Zabini nodded, slipping into the night, leaving him behind in the dim, crowded ballroom. Spring dance. Hours past dusk. He didn't even know why he was still there. Normally, he was long gone before the clock struck twelve, but tonight the room pulsed with bodies and the music hummed under his skin. His drink was half-forgotten in his hand, and his gaze was fixed on a group across the room.

Or, more specifically, on you.

You were standing, black dress to your mid-thighs, half-listening to boys from your year drone on about quidditch tryouts and the usual chatter that filled the space between your breaths. But your eyes—your eyes weren't on them. You were looking at him. A soft smirk tugging at the corners of your lips, like you knew something he didn't.

His heart kicked against his ribs. Where was that line again?

You winked, and he sipped his drink. He'd always said bad decisions made good stories—but even if this (unnameable thing between you) was a story worth telling, the people to hear it would be few.

The tension grew suffocating and he finally looked away. You took that as a win, but you weren't about to let the game end there—not after you noted the tense of his fingers around his cup. You excused yourself from the group, your body moving through the crowd like water, fluid and unhurried, weaving your way toward him.

You knew the line well, the one Mattheo pretended so hard to respect. Restraint wasn't his nature—it never had been, not in the decade you'd watched him take whatever he wanted without a second thought. He wasn't made for holding back, and it showed every now and then—every time his lips crashed against yours in some hidden corner, whispering confessions of how badly he wanted more, how he ached for what he couldn't have.

You loved pushing him to that point. You loved knowing how bad he wanted you. Your brother would lose his mind if he found out. But that didn't matter, not even a little. Not when Mattheo looked at you like that.

"Having fun?" He asked upon your approach, his voice a shade too flat.

"A little." You leaned against the wall beside him, close enough that he could feel the warmth of your skin, your presence seeping into the space between you. "What about you? You seem a bit...tense."

"Tense." The word came out bland, barely audible, and he took a slow sip of his drink, like he needed it just to find his voice. "Why would I be tense?"

You wet your lips, slow, deliberate, studying him with that sidelong glance that made his pulse skip. His jaw tightened, and his eyes—those beautiful, dangerous brown eyes—scanned the room with something too close to desperation.

"Good question." You tilted your head, gaze playful, curious, like you were dissecting him right there in the half-light. "Maybe it's because you've been watching me like a hawk. Like you're waiting for me to do something...wrong."

"Maybe I'm just looking out for you," he muttered, his gaze sliding to your brother across the room, lips locked with some brunette. Mattheo's eyes flickered back to you, just for a moment. "Your brother's a little...busy, after all."

You raised an eyebrow, the corner of your mouth curving into an amused, almost wicked smile. "Ah, so that's it. You're just being my big, overprotective babysitter."

"I don't need to babysit you," he grumbled, though his gaze betrayed him, darting over to the group of boys you'd been talking to. "Just keeping an eye on the company you keep."

It was almost amusing—the way Mattheo stood there, sizing up your guy friends like they were targets in a lineup, probably mentally noting who he'd hit first if any of them dared to step out of line. He was different tonight—and you could have brushed it off, could have let that flicker of vulnerability slide, but that wasn't how this game was played. Not with him. Not with you. There was no room for naivety here.

You turned to face him now, full-on, shoulder resting against the wall as you raised a hand, fingers brushing lightly up his arm.

"Keeping an eye," you repeated as you traced the hard line of his shoulder, then down, lower, over his chest. "Ever my hero, Mattheo Riddle."

When your fingers grazed his abdomen, his breath caught and he grabbed your wrist—hard—the suddenness of it making you gasp. Then, he turned to face you, and his gaze finally met yours—really met yours—for the first time since you'd crossed the room.

"Don't." His voice was low, strained, like he was fighting himself as much as you.

Your eyes widened in mock surprise, that innocent look you'd perfected like a sport. You wore it like a halo you knew you didn't deserve.

"Don't...what?" You damn-well knew what.

His grip tightened, just enough for you to feel the heat of it, pulling you closer, so close you could feel the tension radiating off him. He wet his lips, and you melted—remembering how it felt to kiss them.

"Don't play games with me." He said. "Not tonight."

The warning was clear, but instead of pulling away—heeding his words and letting that heat simmer down—you leaned closer, defying every unspoken rule. The thrill shot up your spine, into your brain, turning everything hazy, electric. You were drunk on it.

"Why not?" Your free hand traced up his other arm and his gaze followed the movement, lips parting ever so slightly. "...afraid you'll lose?"

Before you knew what was happening, he had you spun around—so fast you barely registered the movement before your back hit the cold stone wall. His drink found the table beside him, his focus entirely on you.

"Don't to this to me. Not here," he whispered. "Your brother is right over there."

You glanced toward Enzo, still too preoccupied with the brunette to notice a thing.

"He's a little distracted, don't you think?" Your fingers on your free hand resumed their path, this time up toward his collarbone. But his other hand found them, too. You looked down. Two large hands, wrapped tight around your wrists, like he could stop the fire running through your veins if he just held on hard enough. Your thighs shook. "Gods, you really are tense tonight, aren't you?"

Mattheo's eyes narrowed, two embers gleaming in the night— his lips twitching in a way that made your pulse stutter. There was need in him now, a raw, visceral energy that vibrated between you. Untethered.

He leaned in, closer, his breath brushing against your skin. "You're impossible."

"Impossible..." you echoed, the space between you shrinking with every second. There was no choice in it. It was magnetic, inevitable. He leaned closer, and you—against all reason—matched him, drawn by a force you couldn't name. "Impossible to...resist, Matty?"

Your lips were so close, you could almost taste the flavours lingering on his breath. The heat of him drew you in like gravity, pulling you into that dangerous space where everything blurred—boundaries, rules, reason. His eyes flickered down to your mouth, his tongue darting out to wet his lips in a way that felt instinctive—

And then, the world snapped back.

Cheering—loud, raucous—followed by the sharp crack of glass splintering against the floor. It cut through the moment, pulling you both back to reality. Mattheo's gaze jerked toward the sound, and in an instant he took a step back, his hands releasing your wrists like you'd burned him—like you were the danger here, a fire he'd gotten too close to.

"We can't," he whispered, and it sliced through you. It hit harder than the crash of glass, harder than the noise around you. "You don't want this. I promise you don't."

You stared at him. You knew what he meant, what he was trying to say, the warning etched in every tense line of his body. The two of you had been over this before. You knew Mattheo Riddle was not the man who would love you, not the man who would stay, who you'd call your forever. You weren't that naive. You weren't looking for forever—you just wanted a beginning. A first. A first that would teach you the edge of desire, with someone who knew what to do.

Someone experienced.

"I do," you whispered, barely holding steady under the weight of it all—the realization that you'd almost kissed him, right here, where anyone could've seen, where your brother wasn't far. "More than anything, I do."

His jaw clenched, that flicker in his eyes darkening. He ran a hand through his hair, curls falling messily back into place, his face twisted in thought, already calculating the fallout, already seeing the inevitable consequences.

"Your brother will kill me," he muttered. "He'll kill you."

"He’s not my dad, Mattheo. I’m an adult. He doesn't have to know." The words came out firm, too firm for how fast your heart was beating. You didn't dare move closer, but the tension between you was still electric, still alive. "No one except us."

For a heartbeat, his eyes locked onto yours, and you felt it—that gravity pulling you both back to the brink. It was visible—the weight of his indecision, the way he was measuring the risk, the pull of you against the walls he was trying to keep intact. It'd been months of this. You were relentless. His scowl deepened, but he didn't pull away. He let the silence stretch, your words simmering between you like a match lit, waiting to catch fire.

And then, a nod.

Barely there, just a sharp dip of his head, almost as if he didn't want to acknowledge it himself. You couldn't tell if it was for you, or some silent permission he was giving himself, a final surrender to the pull that neither of you could fight.

"Room of Requirement," he said, vibrating with the tension that still hummed in the air. "Ten minutes."

Your stomach leapt into your throat, every bone in your body suddenly weak. After a moment that felt as though it went on forever, you nodded, and he took another step back.

"Ten minutes." You repeated.

"Ten minutes." He confirmed, before turning and heading out of the ballroom.

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