So, we have had a couple of good talks. He pretty much dragged out everything I've ever said to him that hurt his feelings. In every single case, it was something that triggered my abandonment issues. Unfortunately, when I'm in flight/fight mode, I fight. I fight like a cornered rat, because that's basically what I am. Now, finally, he understands.
Anyway, it's true that f*ck buddies isn't a good solution here, so today I told him that I am hiring a lawyer and letting him/her advocate for me. I have no sense of entitlement, and my brain feels muddled half the time, so I know I'm not capable of making wise decisions right now. I also told him that one of us has to leave, because this is too painful for me.
Now he's waffling. I get the feeling that this wasn't well thought out. I don't know if he was trying to scare me or if he really did/does want to leave, but he's not happy with my reaction. He says he's confused about his feelings now that he understands my side of our conflicts...