When I was married there was a point where my children were little that my ex would avoid home and hang out with his best friend. We had a guy staying with us that helped me around the house and with the children. I developed feelings for him. I found out years latter that my son thought that guy was his dad. Just because his dad was never home. Instead of cheating I took my ex husband aside and told him how I felt. I told him I had feelings for the other guy. The other guy made a pass at me soon after and when I did not go for him he had a break down and pulled a vanishing act on his friends and family for 2 years. So I did end up hurting him. Eventually I broke up with my ex for a year. I made the mistake of getting back with him and married him. Finally in 2004 I divorced him. You know it is best to communicate. If you do not want to leave her, you could ask your spouse if she would be willing to have a non monogamous relationship. I would not recommend staying in a relationship just for the children. I made that mistake for awhile and it is not worth it. Lol, I made the same mistake as chatters and waited to read the past posts.