I have sex with my mother-in-law. We started fucking each other about a year after I married her daughter. We had grown quite friendly in that first year and we weren't afraid to hug and kiss each other whenever we met at parties and such. Nothing heavy, just saying hello. Then one day she called and asked if I could come over to fix something for her. I don't even remember what it was, but nothing was broke. She just wanted me to come over. She came on to me and things just got out of hand. We fucked on the floor. She was on top and she let me cum inside of her. It was fantastic. Now she calls me whenever her husband is out and if I can get away from her daughter and we have sex. So far it's still great, and no one suspects anything.