Well.... my fiance smoked from the first day that I met her, though I did let her know that it was a problem with me, but she was going through some "problems" then, and when everything was hunky dorey, she promised to quit. Well.... more problems came and more problems left, but eventually she actually quit for about 2-3 months. Well... then she started partying with her sister, and now she's back on the regular habit.
Well... with my wedding now less than a week away, I've kindly informed her that "If you don't quit, we're not getting married"... though I think she knows that I'm actually joking and love her WAY too much to do that. I did try the "No Kissing" thing once, but I think it hurt me more than her.
Wish I had an idea that worked. Personally, I just wish she would stop with the rhe "stress" excuse..