Melissa cranked the heat up in the Sauna right up to the point of leaving.

Except she didn’t leave.

She leaned against the door, let her bikini top fall, and smiled at me. I couldn’t help but stare at the enormity of her tits.

She knelt on the floor, extracted my cock from my shorts and proceeded to titty-fuck it before standing up, pushing her G-string to one side and rubbing her ass on my dick. It slipped in.

“No, not there, silly,” she corrected, “I want it up my ass.”

Unbelievably, I was fucking my wife’s sister.