If you don't trust someone, and can't regain the trust (if you had it in the first place), you're hurting yourself and your partner, whether he deserves the trust or not. It demeans you to snoop like that.

That said, you found reasons to distrust him. I think you had them before, without snooping, but now you know he's not worthy of trust.

I don't think you should call her. Again, I think it reflects negatively on you. You already know what you need to know. You just need to decide how you're going to handle it.

I think mandy has a great idea. Make an appointment for marriage counseling and tell him you took his advice.

But, know that, as others have said, you are not the only one responsible for your marriage. It takes two! And you're not to blame for his cheating. If he perceives problems with you, he's supposed to talk to you about it, and if you and he feel they can't be resolved, you get a divorce. It is not an excuse for him to cheat. Don't ever blame yourself for his actions.