My MIL came to live with me and my wife after she broke up with her boyfriend and couldn’t afford to stay in her home. She is 49 and I always saw her as attractive but I had never seen her in a s***** way before. I have been married for seven years. My wife is 26, I am 27 and we have a son of four. My wife and I booked a weekend away at a theme park last year but at the last minute I had to work so she took our son on her own. I got home early on a Saturday and heard noises from upstairs. I went up and my mother-in-law’s bedroom door was ajar. I saw her having s** with a younger man. They did not hear me and I was so turned on that I could not stop watching until I had to go and jackoff. After that I fantasized about her all the time and would sneak a peek at her in her bra and p******, or in the shower whenever possible.
Three months ago my wife took our son to visit her brother. I don’t get along with him, so I stayed at home with my mother-in-law for the weekend. We agreed to have a few drinks that Friday night. I got a bit tipsy and started flirting with her. I told her I had seen her with her younger man. It got very awkward and my MIL went upstairs. Ten minutes later she came back down. The door opened and she stood there in a very s*** lace bra and p******. She came over and started to kiss me. I had the best s** of my life that night and we carried on all weekend. For the next week we had the hottest affair ever, but then we agreed it was wrong and stopped. I am now torn. I love my wife, but we are never as intimate. The s** with her mother was mind-blowing.
