Sorry this post is so late, but I just got back from vacation.
My quick opinion: You're doing the right thing. He needs to prove himself to you before you should believe him. Unfortunately, I'm seeing some of my XW in him - things go well for a while, but on the first speed bump things go downhill quick.
There may be something to save, but it's not your job to save it. It's his job. He has a flaw or a weakness that he needs to address. He needs to uphold his side of the marriage.
