I do not live with my parents anymore - partly for these reasons. Hearing about this pisses me off. I don't understand how some parents can be so cruel to their offspring. His parents are quite fucked in the head.
IMHO, if you can, move far away (take him and his GF too).
If thats not possible... I think there's other things you can do.
It sounds like you are coping with the situation. My best advice is to continue to do so. You've definately got your head on straight. Remember that in time it will be over.
Your friend should NOT have threatened suicide. He has got to play it cool, he has got to play by his parents rules. Escalating the matter is not the way to go. Unfortunately there's nothing he can do until he moves out -- he's got to live under the rules of his parents (and so do you).
You and him could 'pretend' to respect your parents. Starting getting along with them. Show them exactly what they want! And for godsake, be stealthy when youre smoking
