Stretching My Sister’s Pussy-2

LENA’S POV

I barely made it back to the guest room without my legs giving out. Marcus’s thick cum was still leaking down my inner thighs with every step, warm and sticky, soaking into my ruined panties. My pussy throbbed, sore and full, a constant filthy reminder of how my own stepbrother had just bred me over his desk while my fiancé waited downstairs.

Alex was already in bed when I slipped in. He stirred, reaching for me in the dark.

“Babe? Where were you?” His voice was sleepy but concerned. “You’ve been gone forever.”

I forced a smile, climbing into bed beside him. “Just talking with Marcus. Family stuff. You know how he is.”

Alex pulled me close, his hand sliding down my back. I froze. If he touched lower, he’d feel how wet I was. How messy. How full of another man’s cum.

“You’re shaking,” he murmured, kissing my forehead. “Everything okay?”

“Yeah,” I lied, pressing my thighs together. More of Marcus’s load threatened to drip out. “Just tired from the drive.”

He kissed me then — soft and sweet, the way he always did. I kissed him back, guilt twisting like a knife in my chest. His tongue brushed mine, and I wondered if he could taste Marcus on me. If he could smell the sex on my skin.

Alex’s hand slid lower, cupping my ass. I tensed.

“You’re really wet down here,” he whispered, sounding surprised and turned on. His fingers brushed the soaked fabric of my panties. “Did I miss something?”

My heart slammed against my ribs. “It’s nothing. Just… thinking about you.”

He smiled against my lips and pushed my panties aside. His fingers found my dripping pussy — still full of Marcus’s cum. He froze.

“Lena… what the hell?”

I panicked. “Alex, wait—”

He pulled his hand back, fingers glistening in the moonlight. “This isn’t just you being wet. This is… fuck, this is cum.”

The room went dead silent. I could hear my own heartbeat.

Marcus had left the door cracked. I knew he was listening. Watching. Probably stroking himself again.

Alex sat up, staring at his fingers. “Whose is it, Lena?”

I couldn’t speak. Tears burned my eyes.

The door opened.

Marcus stepped in, shirt open, that smug, dangerous smirk on his face. “Mine.”

Alex shot up from the bed. “What the fuck?!”

Marcus didn’t even flinch. “She’s been mine for years, Alex. That little video I have of her? The one where she’s on her knees begging for cum? That’s just the beginning. She’s my dirty little secret. And tonight I reminded her who this pussy really belongs to.”

Alex looked at me, betrayal and disgust written all over his face. “Lena… tell me he’s lying.”

I couldn’t. Tears spilled down my cheeks. “I’m sorry… I tried to stop. But he has videos. Old ones. If I don’t—”

Marcus cut me off, stepping closer. “She came so hard on my cock while you were waiting downstairs. Squirted all over my desk like the slut she is. And she’ll do it again. Every night she’s here.”

Alex looked like he’d been punched. “We’re done.”

He started packing his bag.

Marcus just watched, calm and victorious. “Run along then. But Lena stays. She belongs to this family now.”

I sat there on the bed, cum still leaking out of me, watching the man I was supposed to marry walk out.

Marcus locked the door behind him and turned to me, eyes dark with triumph.

“Get on your knees, sis. Time to clean my cock again. While your ex drives away thinking about how I just bred his fiancée.”

I hated him.

But as I dropped to my knees and took him into my mouth, tasting myself and him together, I knew the truth.

I was already addicted.
As I sucked Marcus clean on my knees, my phone lit up with a new message from Alex.

I know everything. And I sent the video to your mother. Enjoy your stepbrother while you still can, whore.

Marcus read it over my shoulder and laughed darkly, pushing his cock deeper down my throat.

“Looks like the whole family is about to find out what a slut you really are, Lena.”