Me & my hubby

Okay so when I met my husband I was going on 5 years of cutting.I was 13 when I started this habit but before that I used to cause physical pain on myself story short he helped me through this it was a long road but he did it and I fell head over heals so much so that I lost my virginity to him and had a beautiful baby 4 years into our relationship. After the baby was born he started hanging out with this very successful guy. I figured he admired him because he wasn't too much older then us and he had a great career,nice home and a nice family this guy was who we wanted to be. After a while it just got odd the guy was acting more like his girl friend then just a friend. I let this go on for 2 years and even got into therapy because I was made to believe that I was seeing things that where not there. One day I got out of work early and I decided to go through my husbands e-mails and reality hit me hard. This "friend" sent my husband the most disturbing e-mail that I never imagined to find. I called my husband and told him to come home because I didn't feel well. I confronted him about all the e-mails I found (I know that it was wrong to go through his e-mails, but I needed the truth) and he freaked and started to cry. He told me that he was molested as a child and then again as a teen. We cried and he told me what had happened with his "friend" that this guy made a pass at him and he stopped talking to him (I believed him). We worked through it somehow, we didn't want to throw away 7 years of our lifes together. All has been well but on monday for some reason that I'm not sure why I did a search;and I found a website where I found my husband. It is a bi/gay site and I know its him because he posted pics of certain body parts. This site shows that the last time he logged in was right before we had our talk 3 years back. But in this site I caught him in a lie about his eledged molestation. I don't know what to do I can't confront him. I can't do it and it's not even because of my children it's all me. I can't stand the thought of loosing him. I'm sorry I know I'm setting myself for a very bleak future . I can't do it!!! I feel like I rather be dead my heart can't take much more of this. This is why I need help as to what should I do should I just let it go and continue with what seems like a fake life or ask for the whole story. Please if you could relate or have gone through this please give me some advice. Thx Lala