If he's stayed out all night before and not called his ex-wives, what makes you think he wouldn't do the same thing to you once the newness of the relationship wanes?
I guess I feel trust about it because he made this choice for himself long before me. He didnt make this choice for me, he made the choice that he didnt like his own character and wanted to change it. That was 10 years ago. He had an 8 year relationship after that (after the ex wife he did those things to) and while I havent questioned his friends, "the good ol' days" have came up and nothing they have said has ever made me think this was recent behavior, it all coincides with what he's told me.