A kind of similar story! After my wife and i divorced the next fuck she had was with the neighboor guy that was also her gymastic trainer.Guy was younger than her and well buitl. he was divorced too.At the time didn't seem to have any girlfriend in his life.I guess he was jerking off a lot.Often was coming to our flat to train my wife.He was very descreet and gentleman but also flirted her nicely.So when we divorced she brought him and this time she respond to his flirt and end up fucking with him in our bed and made a short video that send me afterwards! It was hot as hell!
I think the title is misleading. Why would a wife be so willing to fuck her husbands enemy. She either hates her husband or has no respect for him. Hot scene though!