@Mame,
Yes, you are right...it is SICK! He had the affair with her when I was 17, we had just had our oldest daughter. He went back to it about 12 years later. That's when our "relationship" came to a halt, and I could never get it back. Shortly after that was my first affair.
What am I still doing there? I don't know. Again, my only answer is my family. People really do think we are a great family, we have lots of friends we travel with, him and I go hiking in New England every 6 months, just us two. We go to Disney world as a family every 6 months...bbq's at the house every weekend. We all laugh, cut up...our house really is a happy home. I really am able to keep this private life of mine private. No it's not "real", I understand that.
He went outside the marriage before we were even in the marriage. Why he went back to her, I don't know.
I need to move on, I know. I need to make that step. I know this isn't fair to him. Thank you for thinking I'm not a slut..lol. Although I know I have deep, serious issues.