This might sound like bad advice, but having very recently dealt with some relatives I could only describe as insanely intentionally destructive, have you tried just not caring about the guy? Screw him, don't think about him, and let your world carry on without him.
A touch of explanation, to go with my allegations:
He kicked me out of my own goddamned friend group and is doing whatever he can to make me need him again. Given my situation with other friends (one unbearably annoying, one severely autistic, one in Japan, one in Indiana, one okay but really the sort of person one talks to on the internet for half an hour a month--we never had much/anything in common... and then a few math/English department people I can't really contact to hang out with), it's an extremely bastardly move. It's especially bastardly because he doesn't think the other friends I have really exist.
He's also trying to convince me to work at his job or take an internship there--more attempts to get me under his thumb. He views other people as his minions, there to do his bidding, and spends most of our time together
a. Trying to get me to like him (in a sort of devoted, fawning way--he wants a toady/servant, not a girlfriend)
b. Trying to exclude me
c. Trying to make me compliment or validate him.
In other words, I was spending time with him because I was under the misinterpretation that he was just clueless about what to do with a depressed woman, and now that I'm feeling okay I figured I might as well chum up and be friendly. No, it turns out that he's
El Suprimo Asshole, so as you said--this is it for that fucker.