Is this supposed to be a conversation between 2 adults???
Sounds like children with very filthy mouths....
From my personal experience, in all probability that convo would never had escalated the way it did had you simply complied with his request for space. Instead you attempted to force your idea of support on him. In case you're unaware, for some people space is a form of support...
Him? Not winning any brownie points in the friendship arena either.
I'm with Unaluna, you two need to stay away from each other if not for good, then for a good long while. This is not healthy.
It doesn't matter whether we think he has more than anxiety, that's quite irrelevant as this conversation is about a serious lack of boundaries and respect, not dxs.