"Come on, Mandy, don’t be a buzzkill," Mark called from the ski lodge’s back door, his breath fogging in the cold night air. Snowflakes clung to his dark curls as he smirked. "The hot tub’s ready, and we both know you’d rather be in there than stuck in those wet clothes."

Mandy rolled her eyes, adjusting the strings of her bikini top. "Fine—but if we get caught because you guys can’t handle a few beers without getting loud, I’m blaming you when we all get kicked out," she said, a smirk tugging at her lips.

The group of friends piled out into the frigid night, their laughter echoing through the mountain air.  The stars twinkled above, casting a soft glow on the fresh snow that covered the ground. The crunch of their boots against the frozen earth grew softer as they approached the wooden deck.

Matt followed closely behind his twin sister, Mandy, his eyes lingering on her figure. The flimsy material of her bikini did little to shield her from the cold, and the outline of her nipples was stark against the fabric. He felt his cheeks burn with a mix of feelings that were hard to name. He had always been protective of his twin, but the way his friends ogled her tonight was driving him to the brink of madness. He knew his thoughts weren’t normal. He had no idea what was going on with himself lately, but one thing was for sure he needed to find a way to reel it back in.

The hot tub bubbled invitingly in the center of the deck, surrounded by a ring of steaming mist. The friends quickly shed their winter gear, revealing an array of swimsuits that ranged from practical to barely-there. Mandy's choice was definitely the latter. Her top barely contained her ample breasts, and her bottoms clung to her curves like a second skin. He couldn't help but stare as she stepped into the water, the fabric of her beige colored bikini becoming almost transparent in the hot water, revealing the rosy peaks of her nipples.

Jake, the burly football player, was the first to pass around the beers, which had been cleverly hidden in a snowbank. The bottles were icy cold, a stark contrast to the warmth of the hot tub. Each person took one, the sound of caps popping off echoing in the quiet night.

Matt’s hand trembled slightly as he took a beer, his grip tightening around the bottle. His thoughts churned with a mix of jealousy and something darker, something he didn’t want to name. He’d spent all day watching Jake hover around Mandy—helping her on the ski slopes, his hands lingering just a little too long on her waist, flashing that cocky grin every time she laughed.

Jake was a known player. Everyone knew it, and Matt sure as hell wasn’t blind to what was going through his head. He didn’t care about Mandy beyond what was underneath her clothes. And now, with the beer flowing and the hot tub bubbling, Matt could feel the tension rising, a slow burn in his chest as Jake slid into the water a little too close to her.

Matt lifted the bottle to his lips, taking a long pull, trying to drown the feeling twisting inside him. But it didn’t help. Not when Jake was right there, flashing Mandy that damn grin like he’d already won. He took another deep gulp, hoping the alcohol would numb his conflicting emotions.

The group chatted and laughed, sharing stories of their day on the slopes. Mandy's laughter was like a siren's call, drawing everyone's attention to her. She leaned back in the tub, her breasts floating just beneath the surface. The sight made Matt's heart race, and his erection grew painfully obvious in his swim trunks. He shifted awkwardly, trying to hide the way his cock strained against his shorts.

Since her body had filled out, Mandy had been getting a lot more attention from guys, and she had always loved it. The whispers, the glances, the way they stumbled over their words when they talked to her - it was all a thrilling game to her. But tonight, with her brother's eyes on her, it felt different. It was as if he was seeing her in a new light, one that was more than just his sister. The tension between them was palpable, and she found herself enjoying it in a way she never had before.

The conversation grew louder and more boisterous as the night went on, fueled by the alcohol and the warmth of the water. But amidst the laughter and splashing, Matt and Mandy remained strangely quiet. Their eyes met and held for a moment too long, sending a jolt of electricity through both of them. The rest of the group eventually grew tired and started to drift back to their cabin, one by one, leaving the twins alone in the steamy embrace of the hot tub.

The night air in Vermont was sharp and cold, a stark contrast to the heat of the bubbling water around them. Even Jake had finally gone inside, leaving Matt and Mandy alone in the hot tub. The steam curled up between them, mingling with the warmth of the beers they’d had, the alcohol settling into their limbs, making everything feel just a little looser.

Mandy leaned back against the smooth edge of the tub, her body half-submerged, the water lapping at her skin. She chanced a glance down, her nipples peaking against the thin fabric of her swimsuit, the barely-there nylon between her legs pressing intimately against her. Matt saw it too—his eyes flickering there before quickly shifting back up to the night sky, the muscles in his jaw tightening.

A small part of her wanted to sink deeper into the water, to hide, but the bigger part of her relished it. The way he looked but wouldn’t touch. The way she knew he wanted to. The thought of his restraint sent a thrill through her, and she was willing to bet his cock was already rock-hard beneath the surface.

“Truth or dare,” Matt said, his voice rough, like it had been dragged over gravel.

Mandy scoffed. They hadn't played this game in years, although she had a feeling, tonight's version was going to be different. 

“Truth,” she answered, knowing she was already on the edge of something she wasn’t sure she could handle.

His eyes darkened as he studied her. “What are you thinking right now?”

Mandy swallowed, pulse thrumming. “That I like sitting here with your eyes on me.”

“Fuck,” Matt muttered, dragging a wet hand over his face, pushing back his dark hair before finishing off what was left of his beer.

She licked her lips, watching him, waiting. “What are you thinking?”

His gaze snapped to hers, something dangerous flickering there. “I didn’t pick truth, Mandy.”

A shiver rolled down her spine that had nothing to do with the cold. She was pushing him, she knew it. Maybe too far. Maybe exactly far enough. Watching him hold back, watching him fight whatever was twisting inside of him—it was intoxicating.

Her voice dropped, dripping with something she’d used before to get what she wanted. “Truth or dare?”

Matt didn’t answer right away. His tongue flicked over his lower lip, his fingers tapping against the edge of the tub like he was trying to restrain himself, like he was barely keeping a grip on whatever was threatening to unravel between them.

Finally, he spoke. “Dare.”

A slow, wicked smile curved Mandy’s lips. The heat in her belly coiled tighter, anticipation buzzing through her veins. “I dare you to kiss me.”

His nostrils flared, his shoulders rising and falling with a sharp breath. For a second, she thought he might refuse. That he might keep punishing himself, might keep pretending that whatever was between them wasn’t pressing against his ribs, wasn’t clawing its way out of him the same way it was out of her. She'd felt the same thing. Seen the way he watched her. Saw the jealous rage in his eyes when Jake's hands lingered too long on her skin.

But then, he moved.

The water sloshed around them as he leaned in, his hand finding the side of her neck, fingers slipping into her wet hair as he tilted her face toward his. Their breaths mingled in the chilled air, and for a moment, all she could hear was the bubbling of the water, the distant wind whispering through the trees.

And then his mouth was on hers.

Hot. Insistent. A groan rumbled low in his chest as he kissed her like he’d been starving for it, like he’d been waiting too long. She opened for him, letting him in, letting his tongue sweep against hers, tasting the heat and want. His grip tightened, his body shifting closer, the space between them shrinking until there was nothing left but skin and sensation.

Mandy’s hands slid up her twins chest, feeling the hard ridges of muscle beneath the water, her nails lightly scraping against him. He groaned again, deepening the kiss, his other hand finding her waist, pulling her flush against him.

It was reckless. It was taboo. And yet, neither of them seemed to care.

When they finally pulled apart, their breaths were ragged, their lips tingling, the weight of what they’d just done hanging heavy between them.

Matt exhaled, his forehead resting against hers. “That was a hell of a dare.”

Mandy smirked, fingers still tracing his skin. “You should’ve picked truth.”

His thumb brushed over her lower lip, eyes locked onto hers. “I would’ve told you I wanted to kiss you anyway.”

And just like that, he kissed her again.

This time, it was slower, more deliberate. As if he was savoring every moment of it, committing the feel of her lips to memory. Mandy’s heart thundered in her chest, her breasts pressed against his hard chest, her nipples sensitive to the friction of their bodies. She knew it was wrong—the world had taught her that—but it felt so incredibly right in this moment.

Matt’s hand slipped down from her neck, skimming her shoulder before sliding under the water to caress her side. His fingertips danced over her skin, tracing the curve of her waist and then her hip, his thumb grazing the edge of her bikini bottom. Her breath caught in her throat, her body reacting to his touch in a way she’d never felt before.

Mandy’s own hands grew bolder, sliding down to his abs, feeling the tension coiled in them. The fabric of their swimsuits was the only barrier between them, but it might as well not have been there at all. The heat of his skin burned into her palms, setting her alight with need.

“Matt,” she breathed against his mouth, his name a plea and a question all at once.

"Let's just feel it." He panted into her mouth. "Just for tonight, away from everyone else," His nose skimmed hers. "Let's just do what feels good."

Mandy's hand slid down to cover his, pressing it firmly against her, urging him to dip lower. He obeyed, his fingers sliding under the waistband of her bikini. A shiver ran through her as he touched her, his hand finding her wet and ready. The reality of what they were doing crashed over them like a wave, but the desire was too strong to resist.

Matt’s hand moved with a newfound urgency, his fingers playing with the slick lips of her pussy. He stroked her gently, feeling her tense and relax against him as she grew wetter. The water around them churned with their movements, their breaths growing quicker as they both gave in to the temptation.