Yeah - doesn't really sound like he's a relationship-oriented or at least relationship-motivated person even now. You may seem great in the abstract but that's because he doesn't have to live with you. Doesn't mean you couldn't have a pleasant "friends with benefits" thing now but I'd be leery of expecting any more from him.
As for the jealous exW - that's unfortunate. CMM was very jealous - which I found to be weird, because I've actually never dated a jealous boyfriend before. He was very provoked by the fact that I am friends with almost every old boyfriend (EXCEPT for my exH).
