I walked in on my husband balls-deep in my best friend on our living room couch. Her legs were spread wide, his cock slamming into her wet pussy while she moaned his name. I stood there frozen for ten seconds before slamming the door and driving straight to my brother's place. Mark opened the door in nothing but boxers, his muscular chest bare and that familiar smirk on his face. "What the fuck happened?" he asked when he saw my face.
I pushed past him and started ranting. "That piece of shit is fucking Sarah. Right there on our couch. I saw his cock stretching her cunt while she begged for more." Mark's eyes darkened. We'd always had this tension between us, this dirty secret from when we were younger that we never talked about. Now it felt like the perfect weapon.
"Fuck him," Mark said, stepping closer. "You want revenge? Use me."
I didn't hesitate. I grabbed his face and kissed him hard, shoving my tongue into his mouth. My hands went straight to his boxers and yanked them down. His cock sprang free, already half-hard and thick. I wrapped my fingers around it and started stroking fast. "I want you to fuck me like he fucked her. Make it dirty."
Mark growled and ripped my shirt open, buttons flying. He sucked one nipple into his mouth while his hand shoved into my jeans. His fingers found my pussy and pushed inside without warning. I was already soaked. "Jesus, sis, you're dripping for your brother's cock," he muttered against my tit.
I dropped to my knees and took him in my mouth. I sucked him deep, gagging on his length while I looked up at him. Spit ran down my chin as I bobbed my head, taking him to the back of my throat. Mark grabbed my hair and fucked my face, thrusting hard. "That's it, suck your brother's dick. Show me how much you hate that cheating bastard."
When he pulled out, he hauled me up and bent me over the kitchen table. He yanked my jeans down to my ankles and slapped my ass hard. Then his cock was at my entrance, pushing in one rough thrust. I cried out as he filled me, stretching my pussy wide. He didn't start slow. He pounded me immediately, hips slapping against my ass with every stroke.
"Fuck, your cunt is tight," he groaned. "Tighter than that slut he was banging." Each word made me wetter.
I pushed back against him, meeting every thrust. My tits dragged across the table while he railed me. I reached down and rubbed my clit, coming hard around his cock within minutes, screaming his name.
He flipped me over onto my back and shoved back inside. Now I could see his face, see the raw lust there. He fucked me like he owned me, deep and vicious. "Tell me how much better my cock feels," he demanded.
"Way better," I gasped. "Your dick is thicker. It hits deeper. Fuck me harder, Mark. Make me forget that asshole."
He lifted my legs over his shoulders and went deeper. The table creaked under us. His balls slapped my ass with every brutal thrust. I came again, pussy clenching around him, juices running down my crack. Mark didn't stop. He kept pounding through my orgasm until I was shaking.
When he pulled out, he flipped me again and pressed his cock against my asshole. "You want full revenge? Let me fuck this ass too." I nodded, pushing back. He spat on my hole and worked his cock in slowly at first, then faster once I relaxed. The burn mixed with pleasure as he stretched my ass. He fucked my ass with the same dirty intensity, one hand reaching around to finger my pussy at the same time.
I came a third time with his cock buried in my ass and his fingers in my cunt. Mark grunted and pulled out, stroking himself until he shot thick ropes of cum across my back and ass. "That's for you, sis. Mark your cheating husband with my load."
We didn't stop there. He carried me to the couch and ate my pussy until I was begging again, his tongue lapping at my clit while his fingers worked my ass. Then I climbed on top and rode him, grinding my pussy down on his cock until we both came again. Sweat covered us. The room smelled like sex and revenge.
By the time we finished hours later, my body was sore and satisfied. I left Mark's place with his cum still leaking out of me. When I got home, my husband was sitting there looking guilty. I just smiled and walked past him to shower, already planning my next visit to my brother's house. The cheating bastard had no idea what kind of incest sex revenge he'd started. And I wasn't done yet.
