Mati,
I'm sorry for all you are having to deal with right now. I'm sure you are feeling very overwhelmed.
I don't know if your son is n. I do know that most young adults are n by definition and feel that the world revolves around them. My T and I have talked about this because I have a son in this age category too. When I observe him being demanding, entitled, uncaring of the feelings of others, I start to panic that he is following in his father's footsteps. I have talked to him about it, and I have seen improvement in his behavior as a result. My T has explained that kids this age behave this way as they are breaking away from the family and learning to be independent. They don't know how to do it in a nice way so they just treat us like crap at times.
That being said, I think from things you have said previously, that your son is pushing the envelope. If I were you, I would stop trying to take care of him, I absolutely wouldn't give him any more money and move without him. He is at a point where he needs to step up and take responsibility for his own behavior and life. The worst thing you can do, imo, is to enable this behavior any further. It is hurting you more and more and you don't need that right now. You need to concentrate on you now and find a way to start healing from all the abuse that has been inflicted. Let your son come to you and only on your terms. I know it is easier said than done where our children are concerned, but he is an adult and you can't make him do anything he doesn't want to do or force him to behave respectfully. All you can do is refuse to be party to it.
The best thing for him (and you) would be therapy right now, but I'm guessing he wouldn't be willing and probably couldn't afford it. If he does want to go back to school, I would make him find the money and show the effort. Down the line if it appears that he is being serious, you could offer some help if his attitude has improved.
It is so difficult to stand by and watch our children make mistakes. But this is out of your control. With any luck, he will have a lightbulb moment and realize that he needs to straighten out his life. If his father wants to continue to enable him, that is also out of your control. You need to concentrate on what is within your control and let go of the rest. I need to follow my own advice.
Hugs and blessings,
Brigid