If at all possible, I suggest just completely ignoring this person... Build yourself a fucking strong brickwall and try focus on something else...
Don't know if this is feasible, because I don't now the entirety of the situation..

That's what I'm doing for now, he hasn't messaged me but I know soon he will. He's been gone for months and I was really hoping he'd stay gooone.
Until he decides to say something me I'm going to focus on commissions and shit and hope he doesn't.

I'd say just ignore the shit out of whoever... and I'm sorry to hear it.. :(

If this guy DOES knock down your brick wall, take it out on him slowly. Judging by your condition, high amounts of stress could lead you to actually vomit because you'd be taking in so much oxygen... Sorry if I'm being captain obvious here I just don't want one of my friends to get seriously broken beyond repair... I'm sorry for this whole entire thing that's going, it isn't my fault no but I'm apologising because life doesn't do it that often

I also have asthma and epilepsy, so the stress probably doesn't help with that and don't apologize, it means a lot really and I'll be okay. I've dealt with him before, and with his track record he'll probably just disappear again any way.

I'm glad to hear it, if he doesn't I'll come over there myself and personally give him a lesson or two...