I caught my husband balls-deep in his secretary last Tuesday. Phone pics don't lie. Her legs were spread on his desk, his pants around his ankles, and he was grunting like the pig he is. I didn't scream or cry. I just saved the evidence and called my brother.
Mark answered on the second ring. "What's up, sis?"
"Come over tonight. Mike's working late again. We need to talk."
He knew that tone. He showed up at eight with a six-pack and that same hungry look he'd had since we were teenagers fooling around in the basement. I poured us both whiskey and showed him the pictures.
"Fucking asshole," Mark said, scrolling. "You want me to beat his ass?"
"I want you to fuck me," I said flat. "Right here. On our bed. And I want you to film it so he sees every second when he gets home."
Mark didn't hesitate. He set his phone up on the dresser, hit record, and pulled me against him. "You sure about this?"
"Shut up and take my clothes off."
He ripped my blouse open, buttons flying. My tits spilled out and he sucked one nipple hard, biting just enough to make me gasp. His hands shoved my skirt up and yanked my panties down. I was already soaked. Revenge makes a girl wet.
I dropped to my knees and freed his cock. Thick, veined, already leaking. I licked the head then took him deep, gagging on purpose for the camera. Spit ran down my chin while I worked him with my mouth and hand. "That's it, sis," he growled. "Suck your brother's dick like the cheating slut you are."
I stood, bent over the bed, and spread my legs. "Fuck me. Fill me up so his cum has company when he tries to touch me later."
Mark slammed into me in one thrust. I cried out, loud and filthy. He gripped my hips and pounded, skin slapping, balls hitting my clit. Every stroke was payback.

I moaned his name, told the camera how much better my brother's cock felt than my husband's. Mark reached around and rubbed my clit until I came hard, pussy clenching around him.
He flipped me onto my back, hooked my legs over his shoulders, and drove deeper. Sweat dripped off him onto my tits. I clawed his back and begged for more. "Come inside me, Mark. Breed your sister. Make it nasty."
He roared when he unloaded, hot pulses flooding my cunt. We stayed locked together, breathing hard, while the phone kept rolling. I scooped some of his cum with two fingers and licked them clean for the video.
Later we watched it together on the couch, his fingers lazily circling my clit. Round two started on the floor. He took me doggy-style this time, pulling my hair, calling me his dirty incest whore. I came twice more before he painted my ass with another load.
When Mike walked in at midnight I was still naked on the couch, legs open, Mark's cum leaking out of me. I hit play on the phone. Mike's face went white then red.
"Get out," I told him. "And take your fucking secretary with you."
Mark stayed the night. We didn't sleep much. By morning the bed was soaked and my body ached in the best way. Revenge tasted like my brother's cock and felt like freedom. Mike could keep his secretary. I had something better waiting in my brother's bed whenever I wanted it.