Rosie had been watching Jay for days—broad shoulders, sculpted arms, and that intense, focused stare that made her thighs clench. He moved like he owned the weight room, all quiet power and discipline. And that just made him even more irresistible.

She’d noticed the engagement ring the first day—shiny, bold, and annoyingly present. But it didn’t deter her. If anything, it added fuel to the fire. Forbidden things always tasted better.

They weren’t strangers either—passing nods by the dumbbells, shared smirks at the water fountain, the occasional joke about sore muscles. Just enough to blur the line between casual gym friends and something heavier simmering beneath.

Today, she wasn’t here just to train—she came to tempt. Dressed in her tightest black yoga pants and a cropped sports bra that barely contained her, she was a walking sin.

She hopped on the treadmill directly in front of him, setting it to a brisk walk. Each step sent her hips swaying, the fabric clinging in all the right places. She “adjusted” her waistband slowly, tossing him a look over her shoulder.

Jay’s stare was magnetic. And she was done playing subtle.

Jay wiped the sweat from his brow, pretending to focus on the dumbbells in his hands, but his eyes betrayed him—drawn again and again to the blonde on the treadmill.

She moved with hypnotic rhythm, her curves framed perfectly in second-skin yoga pants. Golden strands of hair clung to the sides of her flushed cheeks as she ran, each bounce teasing the edge of control. The tight sports bra hugged her full chest, damp with sweat, the fabric darkening where her body heat built.

Jay adjusted his stance, his gaze drawn to her with a force he couldn’t resist. Her hips swayed slightly with each step, her body a silent invitation in motion. He wasn’t sure if she knew the effect she had on him—or if she was doing it on purpose.

She slowed, pressing the towel to her collarbone, then turned her head just enough to catch his eyes in the mirror.

There was a pause. A flicker. A smirk.

Jay’s pulse spiked, but not from the workout. That look wasn’t innocent. It was challenge wrapped in sweat. And he already knew—he was going to lose.

Rosie stepped off the treadmill, catching Jay mid-stare. "Enjoying the view, or are you checking for proper form?" she teased.

Jay coughed, face flushed. "I, uh… just making sure no one's… overheating."

Her eyes sparkled with mischief. "Well, I’m definitely warm. Could be all the cardio… or your laser eyes on my chest."

Jay fumbled for words, staring at the floor. "I swear, I was—looking at the… mirror. Form. Yeah."

Rosie chuckled, then leaned closer. "Relax, Jay. If you’re that eager to watch me, you can be my spotter."

His pulse spiked. "Deal."

Jay stood behind the bench, trying to focus as Rosie gripped the bar. Her chest rose with every breath, pressed tight beneath her sports bra. He swallowed hard.

“Alright, ready?” she asked, glancing up.

“Y-Yeah. I’ve got you,” he managed, eyes glued to the bar—mostly.

Rosie began her reps, and Jay’s self-control unravelled with each bounce. By the fifth rep, he was fully hard and trying not to shift.

She racked the bar and smirked. “You okay up there, spotter? You look... tense.”

Jay cleared his throat. “I’m fine. Just, uh, focused.”

Her eyes dipped—just enough to notice. “Mmm. Looks like your blood’s rushing to the wrong muscle.”

Jay blushed. “Shit, I—sorry, I didn’t—”

She cut him off with a grin. “Relax. It’s flattering. Want help... stretching it out after?”

He blinked. “Like… assisted cool-down?”

Rosie licked her lips. “Something like that.”

Rosie sat up, grabbing her water, eyes flicking to Jay’s hand as he awkwardly adjusted his waistband. “Nice ring,” she said with a smirk. “Guess the fiancée isn’t handling your... warm-ups properly?”

Jay’s ears burned. “She’s... busy. Work, you know.”

Rosie raised a brow. “Mmm. Looks like someone’s got neglected muscle groups. That’s how injuries happen.”

Jay chuckled, regaining some swagger. “Well, maybe my pupil should take more responsibility. I mean, you did get me all worked up.”

Rosie laughed, shaking her head. “Oh, so this is my fault now?”

He shrugged, playful. “You’ve got me sweating, staring, nearly fainting. I think it’s only fair you finish what you started. For health reasons.”

She stood, close enough for him to feel her heat. “All about proper recovery, huh?”

Jay grinned. “Exactly. Wouldn’t want to pull anything.”

Rosie winked. “Let’s hope you do—just not a hamstring.”

Rosie stepped in close, her fingers trailing down Jay’s abs, stopping just above his waistband. “Damn,” she murmured, eyes locked on his. “All that tension... you’re practically vibrating.”

Jay swallowed, heart thudding. “Rosie…”

She pressed her palm lightly against him, feeling the heat, the hardness. “Yeah, your fiancée’s definitely slacking.”

He hissed through his teeth. “This is crazy… I was just flirting.”

Rosie leaned in, lips brushing his ear. “Crazy would be not finishing this. Besides- your flirting worked”

Her hand lingered for a beat longer, then she stepped back, playful glint in her eyes. “Meet me in the parking lot in ten.”

Jay’s eyes stayed locked on Rosie as she strolled toward the women’s changing room, hips swaying like she knew he was watching. She tossed him a sly glance over her shoulder, and his body responded instantly—his erection pressing uncomfortably against his shorts.

He snatched a clean towel from the rack, snapping it over his shoulder like he’d just finished a tough set, using it to shield himself as best he could. The walk to the men’s changing room felt endless, every step a reminder of the cock straining beneath the thin fabric.

Inside, he let out a shaky breath and stripped quickly, jumping under the cold shower spray, though it did little to calm the hardon pulsing between his legs. Every image of Rosie—her curves, her teasing words—flooded back, making him harder still.

He dressed in clean clothes, ran a hand through his damp hair, and stared at himself in the mirror. His heart was racing, not from the workout but from what was about to happen. With a crooked grin, he slung his bag over his shoulder and headed straight for the parking lot.

Rosie waited in the parking lot, droplets clinging to the ends of her damp hair, the clean, floral scent of her shampoo lacing the heavy night air. She’d swapped her gym clothes for something bolder—an almost sheer tank clinging to her curves, the straps slipping low on her shoulders, and tiny shorts that looked more like lingerie than anything meant for public. Every inch of her screamed invitation, but with an edge that felt like a dare.

She spotted Jay approaching—his steps too deliberate, jaw set like a man walking toward a sin he couldn’t stop. The cock straining his shorts betrayed him long before he reached her.

Without a word, she opened the back door. The world outside vanished. Her fingers brushed against his thigh, lingering with intent. She started stroking his cock over his shorts. “Still thinking about that ring?” she whispered, eyes gleaming. “Don’t worry. Tonight, it won’t save you,” she whispered, as she pulled his shorts down, her gaze hungry and unrelenting. “Wow,” she murmured, voice low and deliberate.

“You know,” she purred, leaning closer, admiring his cock, “for someone like you… I’d expect a little bragging.”

Jay froze, cheeks warming. “I… don’t know what you mean,” he stammered.

“Oh, come on,” she teased, stroking his thick, long hard cock. “All that strength, all that… size… and not a word.

Rosie’s fingers gripped his cock at the base, her eyes alight with mischief. “You know,” she murmured, leaning close, “your fiancée is definitely neglecting her duties.”

Jay stiffened. “I—”

She cut him off with a wicked smile, her hands stroking his full length up and down. “Yeah. Missing out on… well, all of this,” she whispered, letting her gaze roam. “Lucky for me, though—I get the full experience.”

Jay moaned, barely able to keep his eyes open, as she licked precum off his cock, "This is wrong… I shouldn’t—"

"But you are," she purred, as he sucked on his cock head for a bit before attempting to take more of it in. She stopped halfway and pulled out. She licked his cock up and down, drooling on it, all the while stroking his cock.

His head fell back, a low groan escaping as his hands tangled in her hair, guiding her with slow, deliberate pressure, encouraging her to take more of his thick and veiny cock.

Her hand reached and cupped his balls, twisting them. It made him wince and look down into her deep blue eyes. She met his gaze with playful defiance, her eyes sparkling as though she were testing how much he could take. She gave him a quick wink and eased the pressure, her movements teasing and deliberate, as her mouth tried to take more of his cock.

He couldn't help but force her down on his shaft, pushing it all the way in. Jay’s body trembled from holding back, the week’s worth of pent-up cumm. Rosie triumphantly took all of his cock deep in her throat, her gaze predatory. She knew her fiancée would not have been able to do that.

She held him there, proud and unflinching, cock throbbed in her throat, making it impossible for him to focus on anything else. The intensity in her eyes made him ache with desire and anticipation, every second stretching like fire between them. She was drooling as she went up and down his cock, his hands grabbed her head and he started to fuck her throat.

Just when he thought he would be shooting cumm, Rosie pulled away with a wicked grin. “Not so soon, I want to feel it stretch my pussy open”.

She stood before him, tugging at the hem of her almost sheer tank that clung to her curves, the thin straps sliding low on her shoulders as though begging to fall. Her tiny shorts—closer to lingerie than clothing—hugged her hips before she hooked her thumbs into the waistband.

Slowly, deliberately, she peeled the shorts and panty down, swaying her hips as if daring him to stop her. The fabric fell away, and she let the tank slip off her shoulders, leaving her nearly bare in the dim light. Jay admired her perfect tits, pink nipples erect.

Her eyes locked on his, unblinking, predatory. “You’ve been staring all week, Jay,” she murmured, voice low and taunting. “Time to find out if you can handle what you wanted.”

Jay reached instinctively, hands finding her breasts, fingers teasing, pulling, desperate to claim what she offered so boldly.

Rosie straddled Jay in the cramped backseat, her breath warm against his neck. Rain tapped the car roof like a ticking clock, but inside, time had stopped. He sucked her tits in turns as she grinded on his hardon with her leaking pussy. He stopped momentarily, squeezing her tits when he noticed the ring on his left hand.

"Still thinking about that ring?" she whispered, grinding slowly against him, her smirk wicked.

Jay groaned, his hands on her hips, unsure whether to pull her closer or push her away. "This is so wrong… I shouldn’t—"

"But you are," she purred, nipping at his ear. "And you’ve been staring at me like a starving man. Don’t pretend now." She grabbed his bare cock and started to descend on it. His thick, long cock stretching her pussy open.

His head fell back as she rocked her hips, riding his cock, deliberate and slow.

"You’re not stopping me," she teased, fingers sliding under his shirt. She kissed him, a wet sloppy kiss, as her pussy leaked on his cock. When they broke the kiss, Jay exhaled sharply. “You’re dangerous.”

Rosie grinned, sinking lower. “And you? Completely helpless. Now be a good boy… and let go. I want your cumm in my pussy."

Jay also started matching Rosie's rhythm as she rode his cock. His cock was throbbing, and she could feel it. She loved riding his cock, how they moved together and was already thinking of where she would be fucking him next. Thoughts of his fiancée flickered briefly, but she dismissed them—after all, that was his problem.

"Yes, Jay, fuck me harder. I can tell how much you're loving this slutty pussy. You want to cumm inside, don't you?"

Jay could barely hold on, his body giving in completely, as he started to cumm. She could feel jet after jet of hot jizz shooting inside her, filling her up. He lay helpless beneath her, every muscle drained of strength while she stayed in control, milking his cock with her pussy. Once his cock was fully drained, she got off her and cleaned the leaking cumm out of her pussy with the panty.

Rosie straightened, sliding her tiny shorts over bare skin, fingers lingering deliberately. Jay reached down, picking up the discarded panty, the last trace of her mischief.

She adjusted her tiny shorts, smoothing the waistband with a little smile. “I’m sure you can get rid of those panties… or keep them. Whatever you like.”

Her tone was playful, and her eyes held the promise that this wasn’t the last time she’d tempt him.