bsf eren and shower time: longer version +18
since the little drable did so well here is a one shot!!
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You’d just rinsed the conditioner from your hair, steam curling thick in the small bathroom, when the door creaked open without so much as a knock.
“Eren” you barely managed, clutching at the shower curtain.
“What? Relax, I’ve seen you in a bikini before.” His voice was so casual, so familiar, like he wasn’t intruding on something intensely private. You could see his silhouette through the fogged glass tall, broad shoulders, and way too comfortable leaning against the counter.
“Get out,” you warned, but you didn’t move to shut him out.
He grinned, that infuriating half-smile in his voice. “You left your phone unlocked on the bed. Guess who texted you.” His eyes roamed blatantly, even through the steam, and you knew he was staring. “You know, you should really lock this door if you don’t want people walking in.”
“People? Or just you?”
“Just me,” he admitted without hesitation, stepping closer until you could make out every line of his face through the blurry glass. “Don’t worry, I won’t tell anyone how cute you look like this.” His hand brushed against the curtain, testing your reaction.
You should’ve told him to stop. But instead, your voice came out quieter. “You gonna hand me a towel or just stand there?”
He chuckled, low and smug. “Oh, I’ll hand it to you… but you’re coming out to get it.”
The water was still beating down on your shoulders when the curtain slid open just enough for Eren’s smirk to appear in the gap.
“You’re taking forever,” he said like it was the most normal thing in the world.
“Eren” You didn’t even get the chance to protest before he stepped inside, shutting the curtain behind him.
The small stall suddenly felt too small, steam curling between you as his bare chest came into view. “What the hell are you doing?” you hissed, but your eyes couldn’t help flicking down.
He shrugged, completely unbothered, droplets already starting to bead on his skin. “Water’s warm. Thought I’d save some.”
“Save some—this isn’t a public pool, Eren.”
“Could be,” he teased, reaching past you for the shampoo bottle like he belonged there. His arm brushed yours, warm and slick, and you felt the heat rise in your face. “Turn around.”
You froze. “…why?”
“So I can wash your hair.” The grin he gave you was downright sinful. “What? I’m being helpful. Unless you think I’m gonna do something else.”
You knew you should’ve pushed him out right then, but instead, you turned. Slowly. His fingers worked through your wet hair, nails grazing your scalp in a way that had nothing to do with friendship.
“See?” he murmured in your ear over the sound of the water. “Nothing weird. Just me… and you… and no clothes.”
Steam still clung to the walls of the bathroom, the mirror fogged so thick you could barely see your own reflection. You’d wrapped yourself in a towel by the time Eren finally climbed out of the shower behind you, his grin lazy and satisfied, like nothing about what he’d just done was out of line.
“Don’t look at me like that,” he said, shaking water from his hair. “You’re the one who didn’t kick me out.”
Your glare was weak at best. “You walked in.”
“Yeah. And you didn’t exactly push me out, did you?” His voice had that cocky, matter-of-fact lilt he always used when he knew he had you cornered.
You tightened the towel around yourself, heart racing, but the silence in the room was too loud. Because the truth was, this wasn’t the first time he’d pulled something like this. Maybe not this bold, stepping into the shower with you, but Eren had always been shameless about testing the line between “best friend” and “something else.” Touches that lingered too long, the way his eyes tracked you when he thought you weren’t looking, the casual comments that always sounded like jokes but hit too close to the truth.
This time, though… he’d gone too far. And you hated how much you hadn’t hated it.
“Eren,” you said, trying to steady your voice, “you can’t just—”
He stepped closer, towel slung low on his hips, dripping water across the floor as if he didn’t care. “Can’t what? Be honest?” His hand found the edge of your towel, tugging lightly, just enough to make your pulse spike. “You think I don’t notice the way you look at me? You think I’m the only one who’s crossing lines here?”
You froze, caught between indignation and the heat rising in your chest.
Eren leaned down, his breath warm against your ear. “You could’ve told me to get out. You didn’t.” His fingers brushed your arm, teasing, deliberate. “So tell me now. Say the word, and I’ll leave.”
He was baiting you — giving you an out but daring you to take it, daring you to admit you wanted him to stay.
And that was the problem. You didn’t want him to leave.
Steam curled in the air, heavy and damp, sticking your hair against your skin. The towel clutched at your chest felt like the only barrier between you and him, and yet it was already slipping loose under the faint tug of Eren’s fingers.
“Eren…” your voice came out weaker than you wanted, almost pleading, almost warning.
But he only smiled, a sharp, crooked thing that was too smug to be innocent. “Don’t say my name like that unless you want me to do something about it.” His eyes flicked down, lingering where the terrycloth gaped.
You could’ve told him to stop. You could’ve stepped back. But your feet stayed planted, your breath catching as his hand finally flattened against your waist, thumb brushing bare skin where the towel had shifted.
He leaned in closer, wet hair dripping down your shoulder as he murmured, “You think I didn’t notice, huh? How you don’t move when I get too close. How you watch me the same way I watch you.”
Heat flooded your cheeks, shame burning through you because he was right. You never told him to stop. You’d never wanted him to.
And he knew it. He always knew it.
Eren tugged once more, slow and deliberate, and the towel slid from your fingers. It pooled uselessly on the tile floor, leaving you exposed in front of him. His breath hitched, eyes dragging down your body with none of the restraint he pretended to have around everyone else.
“Fuck…” His voice dropped, low and hungry, but he didn’t lunge like some idiot. He stayed close, savoring, almost reverent despite how filthy his smirk was. “You’re too much for me, you know that?”
Your heart thudded hard against your ribs as his hand cupped your jaw, tilting your face up until you were forced to meet his eyes.
“You really gonna act like you don’t want this?” he asked, tone maddeningly calm, like he had all the time in the world to wait for you to admit it.
And maybe it was the steam, or the way his thumb stroked your skin, or the way you were just so damn tired of pretending you didn’t crave the same thing he did—but your silence gave you away.
Because Eren didn’t wait for words. He kissed you instead.
It wasn’t soft, not at first. It was demanding, shameless, the way he always was with you. His mouth pressed against yours with years of pent-up tension, of teasing and pushing and daring. You gasped against him, hands clutching at his damp shoulders before sliding down, feeling the solid muscle beneath your palms.
The towel on his hips hung low, dangerously low, and when your fingers caught on the edge, he groaned into your mouth like you’d been starving him.
“See?” he muttered against your lips, biting lightly before pulling back just enough to look at you again. His pupils were blown wide, his chest rising and falling like he’d run a marathon. “Knew it. You’re just as fucked up as me.”
You should’ve shoved him. You should’ve said something sharp to cut through his smugness. But instead, you kissed him back—harder, needier, giving up the last shred of pretense.
And Eren, of course, took it as permission to push further. His hand slipped down your back, pulling you flush against him, skin to skin, nothing left between you but heat and steam and the years of “best friend” boundaries snapping like fragile glass.
When he finally broke away, lips swollen, breathing heavy, he laughed—low, rough, almost disbelieving. “Fuck, you have no idea how long I’ve wanted to do that.”
Your heart was still racing, your body trembling, but you couldn’t stop yourself from whispering back, “Yeah, I think I do.”
Eren’s grin returned, sharp and dangerous. “Then stop pretending I’m the only one that wants it”
And when he kissed you again, there was no going back.
The tiles were slick under your feet, steam curling like smoke around the both of you. The towel was gone, forgotten, and Eren’s smirk only grew sharper with the way you didn’t reach for it again.
He dragged his thumb across your hipbone like he was memorizing the shape of you, lingering just long enough to make your pulse stutter. His eyes stayed locked on yours, shameless and steady, daring you to call him out.
“You’re shaking,” he murmured, voice low enough to vibrate against your throat as he leaned in. “Not scared though… are you?”
You swallowed hard, but didn’t pull away. His closeness was suffocating, intoxicating. You hated that he knew exactly what it did to you.
“I should kick you out,” you managed, though it didn’t sound convincing, not when your hands stayed right where they were—clutching the damp fabric at his waist instead of pushing him off.
Eren’s laugh was quiet, breathy, like he found you entertaining. “You won’t. You like this too much.” His hand slid higher, brushing the underside of your ribs. “You like me too much.”
Heat flooded your face, betrayal written in the way your body leaned into his touch before your mind could argue.
He tilted his head, his wet hair brushing over your cheek as he whispered, “C’mon. Tell me to stop, and I will.”
But you didn’t. Couldn’t.
Your silence was the answer he wanted, and he grinned against your skin like the devil himself. “Knew it.”
For a moment, the shower was nothing but sound—the steady drip of water, the rush of your heartbeat, the quiet hum of his satisfaction. His hand traced over your side, teasing but not claiming, touching like he had all the time in the world to play this dangerous game.
And maybe that was worse than anything else—how patient he could be, how much he enjoyed making you realize you were the one letting it happen.
When he finally pulled back enough to meet your gaze, his green eyes were heavy, unguarded in a way that made your chest ache.
“You know I’m not gonna stop wanting you, right?” he said, like it was a promise and a threat all at once.
You bit your lip, breath shallow, and for the first time, you didn’t pretend otherwise.
The steam curled heavy between you, clinging to every inch of exposed skin. You’d told yourself a dozen times you’d shove him out, slam the bathroom door, and call it a mistake—yet you were still standing there, back to the wall of the shower, with Eren crowding into your space.
“Still not saying stop,” he muttered, a crooked grin cutting across his lips as his hand slid down from your ribs to the curve of your waist. His tone was smug, but there was heat behind it, raw and hungry. “You really gonna keep pretending this isn’t what you want?”
You sucked in a shaky breath, trying to find your voice, but his fingers squeezed at your hip and whatever protest you had died in your throat.
“God, look at you,” he whispered, leaning down until his lips brushed the damp line of your jaw. “Blushing like you don’t already know what I’m thinking about doing to you.”
When you didn’t answer, his laugh was low, almost disbelieving, like he couldn’t believe you were really letting him do this. And then—slowly, deliberately—he pressed his body against yours, chest to chest, heat radiating even through the thin barrier of fabric he still wore.
The contact tore a gasp out of you before you could bite it back.
“There it is,” he murmured, his grin widening. “Knew you’d sound pretty when I got close enough.”
His mouth ghosted over yours, not kissing, just hovering, taunting.
Your hand twitched at your side, caught between pushing him away and pulling him closer. You hated how natural the latter felt, how much your body betrayed you.
“Say the word,” Eren said, voice husky now, all pretense of casualness gone. “One word and I’ll ruin us right here.”
And you should’ve said no. Should’ve shoved him back and told him to never pull this shit again. But the only thing that came out was a shaky, “Eren…”
That was all the permission he needed.
He crashed his mouth onto yours, hard and hungry, like he’d been waiting for this for years. His wet hair clung to your skin, his hands roaming over you with a possessiveness that made your knees buckle.
The shower blurred into nothing—just heat, steam, the sound of his breath mingling with yours as he kissed you like he’d never let go.
The spray was loud, but not loud enough to drown out the sound of your heartbeat pounding in your ears. You pressed your palms against the slick tile at your back like it might keep you steady, but all it did was make you feel cornered.
Eren leaned in, so close you could see the way the droplets ran down the curve of his cheekbone, catching on his lashes. His grin was lazy, infuriating, and far too self-assured.
“Funny thing,” he said, his voice a low rumble under the hiss of the water. “I’ve walked in on you a dozen times, and every time you tell me to get out.” His hand slid up the wall beside your head, bracing him over you. “But you never make me.”
Your mouth opened, ready to argue, but he tilted his head and let his lips brush the edge of your ear, close enough that you felt the shape of his words.
“You like it, don’t you? Knowing I’m looking.”
Your breath hitched, and that was all the answer he needed. He chuckled, the sound dark and pleased, before he let his free hand skim down the slick line of your arm. He didn’t grab, didn’t push—you could’ve stepped away. But you didn’t.
“You’re shaking,” he murmured, his lips grazing your temple now. “Not scared, though. Excited.”
“Ren—” His name slipped out, half warning, half plea.
He finally leaned back just enough to meet your eyes, his own green gaze sharp, almost daring you to deny it. The cocky smirk softened into something more dangerous: hungry, intent.
“Say you don’t want me here,” he whispered. “Say it, and I’ll leave right now.”
Your throat worked, but the words wouldn’t come. Instead, your silence hung heavy in the mist, binding you both tighter than any confession.
Eren’s smile widened, softer this time but no less shameless. He dragged his thumb over the corner of your mouth, water dripping from his knuckles.
“Yeah,” he said quietly, almost to himself. “That’s what I thought.”
The air between you thickened, charged. His hand lingered at your jaw, and though he didn’t close the gap, the weight of the moment was unbearable—like a kiss hanging in the balance, inevitable but stretched taut on a thread of restraint.
Every inch of him screamed temptation, and every nerve in your body screamed to give in.
The water poured down in steady rivulets, pounding against the tiles, soaking your skin until everything felt slick and molten. Eren pressed in behind you, his chest flush to your back, breath hot against the side of your neck despite the cool mist rising from the shower spray.
You felt the deliberate way his hands roamed—first skimming the curve of your waist, then dipping lower, lingering as though he was memorizing every inch of you under his palms. His touch wasn’t hurried; it was languid, almost taunting, the kind of pace that left your body arching instinctively into him.
When he dragged his mouth along the slope of your shoulder, teeth grazing lightly before his lips pressed in, the sound that left you was swallowed by the rush of water. Eren only smirked against your skin, tilting your head back just enough so he could catch your expression—the flush on your cheeks, the parted lips, the way your eyes had gone hazy.
“Can’t even look at me, huh?” he teased lowly, voice cracking with amusement and want all at once. His grip tightened, pulling you even closer so you could feel just how little space remained between you.
Every movement became its own rhythm: the sound of drops of water pounding down, the slick slide of his hands exploring you, the heat of his body anchoring you against the cold tiles. You caught yourself bracing with one hand on the wall, the other curling around his wrist as if to either stop him—or guide him further.
The steam blurred everything around you, but not the way your pulse raced, not the ragged sounds that mixed with his. The shower had become its own little world, where the only things that mattered were the weight of him against you, the wet press of skin on skin, the delicious wrongness of how far this had gone between best friends.
And the worst part? You didn’t want it to stop.
The shower was already running hot when he crowded in behind you, the steam clinging to your skin. Eren’s chest was pressed flush against your back, his hand sliding over your hip like he owned it.
You tried to steady yourself on the slick tile, but he wasn’t making it easy—his mouth dragging down the side of your throat, teeth catching the sensitive skin just enough to make your knees buckle. The water beat down on both of you, drowning the sounds you didn’t mean to let slip.
“Relax,” he muttered against your ear, one palm flattening against your stomach, the other already exploring lower. His touch was unhurried, teasing, like he knew exactly how long he could string you along before you begged.
You tilted your head back against his shoulder, eyes fluttering shut as the steam wrapped around you. The rhythm he set with his hands made your breath catch, your body pushing back into him without even thinking. He chuckled when he felt it—shameless, smug—his voice low enough to send heat rushing through you.
“Best friends don’t do this, huh?” he teased, fingers tightening on your skin. “But here you are, letting me touch you like this in the bathroom.”
The spray was loud, but not loud enough to hide the way your body betrayed you—the way you clutched his wrist, not to stop him, but to drag him closer, deeper.
When you finally turned your head to catch his mouth, the kiss was messy, wet, unrestrained. His grip only grew rougher, anchoring you against the tile, moving against you with a hunger that made it clear he wasn’t going to stop until you gave him everything.
And in that steamy little corner of the world, you didn’t want to resist.
The steam clung thick in the air, drops sliding down your spine, but you couldn’t even tell if the heat was from the water or from him. Eren had you pinned to the slick tile, his body flush against yours, cock already hard and pressing insistently against the curve of your ass.
You felt the drag of his teeth at your shoulder as his hands roamed, greedy, like he’d been waiting for this far too long. One hand shoved your thigh forward to open you up, the other sliding down between your legs, two fingers parting you under the spray. The slick heat of the water mixed with the way he worked you open, slow at first, then with sharp, sure movements that made your knees tremble.
“Fuck—look at you,” he murmured against your ear, voice rough with a laugh, “so wet for your best friend. Bet you’d let me fuck you right here, huh?”
Your only answer was the sharp gasp that slipped out when he curled his fingers inside you. He grinned against your damp skin, his hips grinding forward in a slow rhythm that promised more.
When you turned your face to kiss him, he swallowed your moan like it was his own, lips wet and hungry. He pulled his fingers free, slick with you, and brought them to your mouth, tapping your bottom lip until you let him slide them past your tongue. “Good girl,” he muttered, cock twitching against your ass.
He didn’t wait much longer. He lined himself up with a harsh groan, pressing into you inch by inch, the tight stretch pulling a cry from your throat that echoed against the tile. His grip on your hips tightened, keeping you steady as he bottomed out.
“Fuck, that’s it—” His forehead dropped to the back of your neck as he thrust forward, the slap of skin against skin lost in the roar of the shower. Every movement was filthy, desperate, water cascading down both of you as he drove into you with sharp, relentless strokes.
Your palms flattened against the wall for balance, body rocking forward with every snap of his hips. He kept one hand around your waist, the other sneaking back down to circle your clit, rough and fast, like he needed to drag you over the edge just as badly as he needed to finish inside you.
The combination was too much—the relentless pace of his thrusts, the way he bit at your shoulder, the filthy words he groaned into your ear. You came hard, legs shaking, clenching so tight around him that his rhythm stuttered.
“Shit—fuck—” he gasped, driving in deep and staying there, grinding against you as he spilled hot and heavy inside, his groan vibrating against your skin.
The water washed everything away—the mess, the sweat, the breathless sounds you couldn’t stop making. But nothing could wash away the way he held you after, forehead against your damp shoulder, muttering something low and smug, like he knew this was never going to be just a one-time thing.

















