C1 Stretching My Sister’s Pussy- 1

LENA

My tits squished hard against the cool mahogany desk, nipples scraping the polished wood with every brutal snap of Marcus’s hips. Sweat slicked down my spine. My engagement ring dug painfully into my palm as I gripped the edge for dear life. That stupid diamond flashed like it was mocking me.

Marcus had one hand twisted tight in my hair, yanking my head back so I had to watch us in the mirror. His other hand gripped my hip hard enough to bruise. His thick cock stretched my pussy wide open, pounding so deep my toes barely touched the floor.

“This pussy doesn’t belong to that loser anymore, sis,” he growled right against my ear. “It’s mine now. And I’m gonna breed it until you forget his fucking name.”

I bit my lip so hard I tasted blood. “Fuck you, Marcus.”

He laughed, dark and low, and slammed into me even harder. The wet slap of skin on skin filled the office. My walls clenched greedily around him even as I cursed him in my head. Traitor body.

It all started the second I walked through the door with Alex.

The house smelled the same — polished wood, money, and that faint trace of Marcus’s cologne that always made my stomach twist. Marcus stood in the foyer like he owned everything, which he basically did. Tall, broad, that tailored black shirt stretched tight across his powerful chest. His eyes landed on me first, heavy and knowing, before sliding to Alex like he was something stuck to my shoe.

“Nice catch, Lena,” Marcus said, not even bothering to fake a smile. “College ball player. How original.”

Alex stiffened. “And you’re the stepbrother she warned me about. The one who thinks he runs everything.”

I grabbed Alex’s arm. “Come on, babe. Let’s drop our bags.”

But Marcus’s stare stayed glued to me. Heavy. Possessive. I’d felt that stare since I turned eighteen. I’d spent years running from it — college, parties, Alex. Anything to pretend I wasn’t that girl anymore.

Alex went upstairs to shower. I thought I had five minutes.

Then my phone buzzed.

My office. Now. Or everyone sees the real you.

My stomach dropped. I knew better than to ignore him.

I stormed into his office ready to rip his head off. He sat behind the massive desk, laptop open, spinning it toward me.

The video started playing. Me. Three years ago. Drunk at that party, on my knees with my top off while two guys took turns. My face clear as day. Moaning. Begging. Cum dripping down my chin.

I slammed the laptop shut. “Delete it. Right now.”

Marcus leaned back, calm as ever. “No.”

“You can’t do this.” My voice shook. “I’m engaged. Mom and Dad think I’m finally getting my shit together.”

He stood slowly, towering over me. “You came home waving that ring around like it changes anything. It doesn’t. You still belong here. To me.”

“Like hell.”

His hand shot out, grabbed my waist, and suddenly I was bent over the desk. Dress shoved up. Panties ripped down. I heard his belt, then his zipper.

“Stop—” The word died when he pushed inside me in one hard thrust.

We both groaned. He was so thick. So deep. My pussy fluttered around him, already soaking wet.

“Still so fucking tight,” he muttered. One hand fisted my hair. The other reached around to rub my clit. “Fight me all you want, Lena. This cunt knows who it wants.”

I tried to push back but only took him deeper. “I hate you.”

“Good.” He pulled out slow, then slammed back in. “Hate me while you cum on your stepbrother’s cock.”

The mirror showed everything. My flushed face, mouth open, tits spilling out. Marcus behind me, shirt open, muscles flexing as he fucked me like he owned me.

He spanked my ass hard. The sting bloomed hot. I cried out, clenching tighter.

“Look at you,” he rasped. “Cheating already. Does pretty boy Alex know what a slut his fiancée is?”

“Shut up.” But my hips rocked back to meet him.

Marcus leaned over me, chest to my back. “Tell me if it’s too much, baby. Say the word and I’ll stop.”

The softness in his voice cracked something in me. I hated that too.

“Harder,” I spat. “If you’re blackmailing me, make it worth it.”

He gave me exactly what I asked for. Fingers working my clit fast while he pounded me. The desk creaked. My knees trembled.

I came hard, pussy gushing around his cock, a broken moan tearing from my throat. Marcus fucked me through it, then pulled out, flipped me over, and slammed back in.

“Gonna fill you up,” he growled. “Gonna breed this cheating pussy.”

I should have said no. Instead I wrapped my legs around him and came again as he exploded deep inside me, flooding me with thick, hot ropes of cum.

He stayed buried, grinding, pushing every drop deeper. Then he pulled out carefully and cleaned me with a warm cloth, almost tender.

A sharp knock on the door froze us.

“Lena? Babe, you in there?” Alex called. “I can’t find you.”

Marcus smirked, fingers pushing some of his cum back inside me. “Answer him, sis. While my load drips down your thighs.”

My eyes widened in panic.

“Lena?” Alex knocked again.

I swallowed hard. “I’m here. Just talking to Marcus about family stuff.”

My voice sounded wrecked. Marcus’s fingers kept moving inside me, slow and filthy.

“Everything okay?” Alex asked. “You sound weird.”

Marcus bit my earlobe. “Tell him you’re fine.”

“Yeah,” I choked out. “Fine. Give me five minutes.”

Alex paused. “Alright. I’ll wait downstairs.”

His footsteps faded.

Marcus pulled his fingers out and brought them to my lips. I sucked them clean, tasting us both.

“Good girl,” he murmured. “This is just the beginning.”

My pussy clenched, already aching for more even as dread twisted in my stomach.

Alex was right outside. My parents would be home soon.

And Marcus had videos that could destroy everything.

He kissed my forehead softly, then stepped back.

“Welcome home, Lena.”

I fixed my dress with shaky hands, cum still leaking down my thighs, and wondered how the hell I was going to face my fiancé while smelling like my stepbrother.
As I stepped out of Marcus’s office, cum still dripping down my thighs, Alex waited at the bottom of the stairs. His eyes narrowed the second he saw my flushed face and messy hair.

“Babe… what the hell happened in there?”

Marcus appeared behind me, his hand brushing my ass possessively where Alex couldn’t see…