boy trouble

he gets me every single time.....
my boyfriend has this problem...
he smokes.

my parents know, i know, my friends know,his parents know, everyone fucking knows that he is killing himself.
I mean, I love him to death, but I wish he would quit smoking. we've tried everything to get him to stop. Bribery, threatening him, everything. does anyone have any ideas.

he always apologizes and acts all sweet about the fact that he does smoke, and says that he wont do it again, but the thing is, he's addicted. and he needs help.

and my dad has this huge problem with him already. now, add smoking on top of that and my dad doesnt even like him stepping in the house.