I can hardly believe this is happening. My thighs tighten around Mike as I sink into his lap, every nerve burning, my chest hammering like it wants to break free. For years, he’s been nothing more than the untouchable crush in my head, and now he’s here, real, solid, holding me so close there’s no room for air between us. His heat scorches through me, unbearable and intoxicating all at once.

The man I was never supposed to touch, my sister Mia’s boyfriend, the one she trusted with her heart and her bed, was now wrapped around me, and I was letting him. Her perfume lingers on the pillow. On the dresser, her smiling photo stares back at me, an unblinking witness to betrayal.

“Take me, Mike,” I breathe, voice shaking but certain. I’ve imagined this in a hundred different ways, but reality is heavier, rawer, rough around the edges.

He answers with a kiss, all teeth and hunger, nothing gentle. His mouth crashes into mine, devouring, and I dissolve beneath it like I’ve been waiting my whole life for exactly this moment. His grip on my hair stings, proof that he can’t hold back anymore.

“You don’t know how long I’ve wanted this,” he groans, his hands restless, dragging across my body like he’ll never be satisfied.

“I do.” My words fall in sharp gasps. “I wanted you too. Always.”

With a sudden surge, he throws me onto my back, the mattress groaning under us. My legs lock tight around his waist, pulling him in. His body pins me flat, feeding the ache I’ve carried all these years.

“We don’t have long, Chloe,” he whispers in my ear, rough and urgent. “Mia could arrive home any second.”

The warning makes my blood surge hotter. Forbidden. Reckless. But instead of pulling back, I gasp, “Then don’t waste time. Fuck me already.”

He thrusts forward, thick and unrelenting, his cock sliding bare into me. The shock tears a ragged cry from me. “Oh God… fuck, you’re so big.”

Panic punches through alongside the heat: no condom, nothing stopping him, and I’m not on the pill. My cycle is never steady. I should push him away, but I only clutch tighter, reckless hunger burning right through fear.

Time melts away as he drives harder, each slam stretching into forever, though deep down I know only moments are passing. We don’t have long; it just feels endless because of the way he fills me, the way danger blurs seconds into eternity.

He groans, jaw clenched. “So tight. You’re swallowing me up.”

My nails rake his back. “I should stop you… I can’t. I don’t want to.”

He drives deeper, rocking me into the mattress. The headboard hammers the wall, the wet slap of him filling the air.

“Yes, Mike.” My voice tears into cries. “Don’t stop. Harder. Please.”

His voice drops to a growl. “Take it. Take everything. I’ll fuck you so deep Mia could never erase me.”

Every brutal thrust splits me further, each one feeding the ache I should resist. My body arches hard, greedily giving him everything.

“I can feel you swelling,” I pant, half-delirious. “Deeper… Mike.”

“You’re spilling all over me,” he snarls. “Over Mia’s sheets. That’s what you wanted, wasn’t it? Me inside you, bare, ruining her bed.”

“Yes,” I sob, head thrashing. “God, yes. Don’t pull out. Fuck me raw.”

His teeth drag across my ear. “Mia doesn’t fuck like this. She doesn’t scream, doesn’t soak a bed. Admit it, Chloe, you’re giving me what she never could.”

“Stop. Don’t,” my protest stumbles into a moan as my hips surge against him. “Don’t say her name. Just… deeper.”

“She trusted you,” Mike growls, pounding harder still, the frame slamming in rhythm. “And here you are. Her little sister, ruined on my cock.”

The coil in me winds mercilessly and sharp. Every slam is reckless truth pounding into me. No condom, no pill, nothing. What if I’m ovulating right now? What if this is the moment everything changes forever? I should let go, but instead I hold tighter.

“I…oh God, Mike, don’t stop, right there!” My scream rips loose.

“Come for me,” he snarls, voice cracking. “Soak me. Soak Mia’s sheets. Show me what she’ll never feel.”

And release crashes in, savage and unstoppable.

I clamp down around him, my cunt milking him in brutal spasms. A scream tears out of me, breaking into sobs as sparks explode across my vision. My whole body convulses as gushes jet from me, spraying across his stomach, his thighs, soaking Mia’s mattress beneath us.

“Christ,” Mike gasps, staring in disbelief. “Look at you. Flooding her bed. Mia could never.”

“Don’t…” My word collapses to a scream as another gush bursts helplessly. “I’m better. Better than her. Oh, fuck!”

He pounds through it, feral. “That’s it. Her sister, drenching my cock. Wrecking her bed. Take it all, Chloe.”

The orgasm wracks me mercilessly, a flood that leaves no inch of the bed untouched, my body shuddering and twitching helplessly under him.

He falters, cock swelling, movements jerking.

“I can’t, fuck,” his voice cracks. “Not Mia. Never her. You. I’m going to fill you.”

My heart seizes, panic alive under the lust. No condom. No pill. No shield at all. If he cums, I could carry this forever. The thought blazes bright, and I still cry for it.

“Yes!” I sob, nails clawing him bloody. “Do it, Mike. Fill me. Make me yours. Not hers.”

He slams deep, locked to the hilt, and erupts.

Heat floods me, thick surges of cum gushing inside. Each pulse fuels the fire, pouring raw into my bare, clutching walls.

“Inside you…” he groans, ragged and spent. “Not Mia. Never her. You, Chloe.”

“Yes.” My words spiral against his jaw. “Every drop. Only me. She’ll never feel this.”

His cock jerks again and again, spilling until it overflows, leaking hot between us, mixing into my spray on the sheets. His shudders tear him apart, my body milking him to the last drop.

Finally, we collapse, shuddering, slick, destroyed. Mia’s sweet perfume still lingers beneath the stink of sex. The sheets are drenched, beyond saving. On the dresser, Mia’s smiling face stares, clueless and damning.

Breath rakes my chest, clarity slamming down. No condom. No pill. My cycle is unreliable. God, what if this was the fertile night I dreaded? His cum sits hot inside me as more than heat: a ticking truth I can’t undo. And heavier still is Mia, not just my sister, but the woman who laughed warmly at family dinners, who trusted me enough to leave him in her bed. She loved him. She believed he was hers, and now I’ve stolen what she cherished. Her bed is ruined, her bond broken, and every drop inside me is proof.

Mike strokes damp hair from my face, voice raw. “If Mia knew…”

“She won’t.” I whisper, “She’ll smile at you tomorrow, still believing you’re hers. She’ll never know I’m full of you. This stays here, in her bed, in her shadow. But it’s ours now.”

I clutch him as if I can freeze this moment, though the truth presses heavy as the soaked mattress beneath me.

Because this was more than reckless lust, it was betrayal made flesh. Burnt into Mia’s sheets, into me, into Mike.

And whatever happens next, guilt, discovery, pregnancy, nothing will ever be the same.