Puff I think it's really strong of you and very kind to see your partner's better qualities and of course I hope he quits. You said he wants to quit, so that's good. Of course you can't do it for him and I hope he will quit on his own and come to appreciate you. Of course when you are involved with someone you love, know and care about it isn't always as easy as simply leaving the person. If they showed no signs of quitting or even wanting to that might be different, we all have our boundaries and such and you have yours too so if being with this guy is where it's at for now then I hope for you both to be happy.