well, i think you have a few options here.

1. if you do not want to help him and do not care, then, obviously, stay away.
2. if you do not want to be around him anymore, but want to help him, confidentially talk to a counselor.
3. if you want to be around him, and want to help him, talk to a counselor and see what they have to say about the situation. they may think he needs professional help....which is very possible.

sometimes things like that are symptoms of personality disorders. i know someone with 8 different disorders. she's a fucking loonatic. drinks, violent, smokes, drugs....the whole package. (plus she has 5 kids, 3 of which are foster children in my household.)

__________________