I agree with Cranky -
My EA husband left five months ago (at my request). It gets so much better! I am so much happier and lighter. The best bit is that I can choose not to reply to anything abusive he sends.
I do everything via whatsapp with him and regularly email the chats to myself.
It did get a little worse before it got better. Weirdly, the more convinced he was that we were going to get back together, the more horrible he was to me! As soon as I made it very clear that we were definitely over, he became much easier to get along with to the point that he asks my opinion on his profile photo for a dating website etc.
I'm afraid I can't offer any residency advice. Our son has special needs so it's been pretty simple for us. But please do DM me about the EA should you need to.
He even turned on all of the parental controls for our broadband here (it's still an account in his name) so I couldn't use any internet because I wouldn't sell my car and replace it with one of his choosing. Sigh.
The mind games are awful at the time aren't they. But you'll get to a point where you look back and will be able to see how pathetic they really are.
Xxx