My Ex Sister in law remarried a few years after my Brother passed away. I was going to be Traveling to California on a Trip and I thought I would stop by and her and meet her Husband. I had planned to get a Hotel Room but my Ex Sister in law insisted I stay at their House. The second Night I was half asleep when I heard the Door to my Bedroom open. It was dark but I could tell who it was by the Size of the Shadowy figure. Before I could say anything she climbed on the Bed and then she climbed on me. She started to kiss me like we were Lovers. Her Tongue was inside my mouth before I could do anything. She was astride me in the dark and she pushed herself down against my Cock. Before I came to my senses to put a stop to this, my Cock was already raging hard. Part of me is into this, the other part is thinking, what the fuck are you doing? Her Hips moved back and forth as we continued to kiss, and within a few moments she knew exactly how hard I was. She pulled her thin nighty up and over her Head and then took hold of my Cock and slipped it up inside of her. She rode me like no other Woman ever had and I loved every moment of it. No idea how long she fucked me but I held out as long as I could before I filled her with Cum. Her Red Nails dug into my Chest as she began to climax a few seconds later. She collapsed on top of me with my wet Cock still inside of her pussy. I couldn't tell who's heart I was feeling pounding against my Chest. Finally she raised up and kissed me on the Lips and slid off of me and out of the Room. The next day there wasn't a chance to ask her what the hell that was all about because her Husband was there of course. That night she came to me again and repeated the sexual act once more. The next day I had to leave and she took me to the Airport, thankfully her Husband had something else he had to do so he couldn't go with us to the Airport. Basically it was "REVENGE SEX" that was offered to me. It seems her Husband had got caught with his Pants down with some Gal that worked in his Office. We talk on the Phone from time to time, but neither of us brings those Two Nights up in our conversation.