Katie,
I can only imagine how much pain you must be in right now, and I am so sorry you're going through this. My thoughts echo that of the others... as hard as it might be to let go, IMO, now is the time to work on you. You've been through something scary, hurtful, and abusive, even if not physically. Time to start the healing process, which means doing whatever it takes to make your decisions be based on what will keep YOU healthy.
Honestly, I do have a positive in this thread that keeps popping into my mind: so many people come here after they are married to someone in this position. I'm so glad that you've got the clarity to see that you don't want to put up with him anymore; can you imagine being legally and spiritually tied to someone who treats you this way?