Mike,
Thanks so much for your insight. I may go check out the Al-Anon board as well--since it looks like I've managed to get myself involved with an addict. Just because he's not drinking doesn't mean there are no issues for me. I feel like I've been duped--it's easy to see he's not an alcoholic like my dad (whew!), but it looks like I've managed to replicate that situation anyway.
I also think that some ideas on what to do next are definitely in order. Thanks so much for the support--it makes me feel like I can do this!