I think you are a very nice person. Probably too nice. So I feel that I need to say something very difficult to say, something that I would tell my sister if she were in your situation.
I know you consider him your boy friend and a victim of unfortunate situation. You want to do your best to help him. But, are you absolutely sure he is not lying to you? His stories sound very suspicious to me. Worse, they sound like designed to invoke your sympathy, guilt, and desire to protect him. He has been successful in getting $100K from you. He could be a master of manipulation. I am worried for you.
Go check out a few facts for yourself. He was employed for a week. Go check with the company and see if that's true. He got an out of state offer for $85K, and when you cried, they countered $120K and he declined? I'll check which company can jump an $85K offer to $120K. Sis, this does not sound right!
You are probably too much in love to think about the possibility. Perhaps, you hate me now. For your own peace of mind, you need to look into his past and check important facts about him. I sincerely hope that I am completely wrong in this case. But his stories just raise red flags everywhere, you need to watch out!!