I am afraid that if he decides to leave, that it will be because of something I said or did. That somehow, all of this was my fault
He will likely tell you exactly that. Don't believe it. Believe in yourself. You are here because you care. You are here because you want to change. You are here to change you -- no matter what excuse he gives you. He is in a deep fog and everything is your fault in his mind. The problem is that he is not seeing or thinking clearly. That is why you need to detach and GAL because that is all you can control at this point.
Our switches are different but I share your same pain and fears. You are not alone.
M:44 W:41 M: 12 yrs W's EA began 3/12 Somewhere between WAW and MLC Still in same house