Looks to me (no expert at such things) like he's lonely and depressed. He says he's not alcoholic. That's his judgment. If so, then why is he using AA and you, as a lonely hearts club? I'd very gently tell him to buzz off. You've got your own issues to work on. If he threatens to drink over it, then that's his choice. He says he's not alcoholic. Tell him not to drink and drive since if he does he might have to make do with jail "companionship"!
W.