I think you need to understand that he isn't just being a jerk and not caring about the fact that you could lose your house, or that you are in such a tough financial situation, but you have to accept the responsibility for putting him in a situation where he has to leave to protect himself and his children.

I have been in EMDR therapy for 4 weeks, and used to drink just to calm my anxiety at the end of the day, but sometimes it could be quite a bit. Since I began the EMDR I have noticed that I don't have the same desire to drink like I used to. Talk to your therapist about EMDR therapy and see if that would help you and it may have a good outcome with your drinking issue also.