Wow. I'm sorry to hear about your situation.
I have a girlfriend that financed her boyfriend's car for him because he has no credit. He lies all the time and won't get a job. He smokes weed but I'm not sure how much of that is playing into the situation. She makes his car payments for him and feels too sorry for him to kick him out. (I keep reassuring her she doesn't need to feel sorry for him but she can't seem to get over that hump.)
I wish I had some advice for you. That just sounds like a tough situation.
Sending you a virtual hug. **hug**