Karen’s text lit up the phone right next to Elena’s hip.

*Hey babe, just checking in. You coming home soon? Love you.*

I stared at the screen for half a second. My wife. My son’s mom. The woman I was supposed to be faithful to.

And here I was, balls-deep in her younger sister.

The guilt of it hit me deep like a punch… but it only made my cock twitch harder inside Elena’s soaked pussy.

“Fuck,” I breathed.

Elena looked at the phone, then back at me. Her eyes were dark and shini gong. That curly little smile came back, bigger this time. “She has no idea,” she whispered,...