Most Helpful Guy
I do not believe in remaining contact with an ex. You were not friends with him. You were in a relationship that failed. There is nothing left. All this does is create conflict of interest and other problems with future boyfriends, or could lead to you missing out on meeting someone new because your ex is still in the picture. Your ex's problems are not yours to solve.
Most Helpful Girl
Be careful and draw a very careful line of what is and isn't appropriate. Don't do ANYTHING that'll put you in a bad place, emotionally or financially. You're never obligated to help anyone, but if you still care for him I understand why you want to be there for him. Don't let him take advantage of your help and care. So if he asks for money, it's okay for you to refuse. If he asks to stay at your place while he "gets better" and you're worried about how that will affect you, it's okay for you to say no.