I want to end my relationship with a decent guy. What's my problem?

I think you should weather it with this guy if he's still there after revealing all these things to him. He's already in the top 10% most guys don't want to deal with the baggage no matter how well you carry it. I've been through similar things and count myself real fortunate to have found someone that wanted to help me deal. You sound like your getting a good hold of things. Don't let your guy go, love is always worth the risk. If he hasn't displayed anything that makes you question him. Don't hurt him by rejecting him when he's made all the right moves. Let this be a strong foundation for something real. He's not your dad or your ex. Good luck girl.