Need advice please!

Hi,
I hope you don't mind me posting here as I don't think I have severe Avoidant Personality Disorder (more neurotic introversion) but I'm trying to build a friendship with someone who shows many signs of severe AvPD and am finding it very confusing.
This man is divorced and our kids go to the same school. We are "musos" and are passionate about the same music. I find his company very interesting, stimulating and rewarding as I have no one else to speak to in person about my passion and so this relationship is very important to me.
During a chat when he came to my house with his child after school, he admitted to being paralysed by fear of performing (he's a musician), needing alcohol all the time and avoiding contact with most people (he is practically a recluse and describes himself as a weirdo).
After the Christmas holidays I approached him at school and asked when I could hear some of his new songs. He said he'd bring me a cd but the next time I bumped into him he apologised and said he'd "bottled out". I said it was fine, but felt he thought I must be a pestering nuisance and felt embarrassed and ashamed.
Since then he has gone out of his way to completely avoid him, and if I see him at pick up time I pretend I haven't and keep my distance so as not to seem a pest.
I feel that he was also ashamed of his reaction and maybe thinks he can't trust me as I behaved (in what he might interpret) as an insensitive manner, when I was actually trying to show interest and appreciation.
I need advice on whether I should keep away and not say anything, or whether I should try and apologise for my faux pas either privately in person or maybe by facebook as I know he uses this although I have not tried to befriend him on there in case he feels I'm stalking him!
I should add that I have a hunch he finds me attractive (as I do him) but he knows I'm married. This makes things a lot more complicated even though I have been careful to keep things platonic!

Your thoughts on what action I should take next would be greatly appreciated!

I would keep my distance for now if I were you--being that you are married and you both find each other attractive.
I've been down that slippery slope myself more than once!

Yes, I guess I'll keep my distance (he makes that easy anyway). I really don't want to terminate all future contact though. I think I can keep things very casual and light and attempt to rebuild contact very slowly.