I'm also thinking of you. Though I haven't been posting to your thread lately, I've been keeping up with it.
I want to second what JeffSTL said, though. Don't put yourself in a bad financial position by letting the emotional side of what's going on take over. You need to have a stable plan. Time really is on your side, so prepare yourself. Think of things as a business transaction - what do you need to do to make the business deal work for you?
That said, I wouldn't leave the house. You have to stand up to him and his poor choices. Why should you be inconvenienced because of his inability to be in a mature relationship? You can always throw his stuff out in the street. Won't be the first time that's happened.
