My wife had a 1o yr old son when I married her.When he was around 15 one Saturday I was really h**** and told my wife lets go to the bedroom.She said not with him home. I convinced her to follow me to the bedroom and got her naked and started f****** her. She was getting pretty loud and all of a sudden the door opened it was her son just staring at us.I had her legs over my shoulders f****** her. He said Mom are you ok and I said yeah were f******. He just stood there staring. I said wanna join in. My wife said no. I said let him f*** you he needs to learn. Again she said no. He said please Mom. Long story short I got off and she he got on. He c** in about 5 strokes. I convinced her to s*** him hard again and he fucked her again. After that until her went to the Army he was allowed to f*** her anytime he wanted as long as he kept in the confines of our house