What would you do?
My problem is my best friend was away for 2 months on a construction job in South America. During that time I was fucking his wife on a regular basis. Now he finds out he has to go back there during the Christmas holidays. He can take his wife but she gave him some dumb ass excuse not to go. He's very suspicious and has asked me to keep an eye on her. No way I'll ever fuck her again, but the damage has been done. She's close to telling him about me and her so I'm thinking of telling him myself. A lifelong friendship ruined. What would you do?