So nice of you to think of breaking up with your girlfriend or breaking free from smoking inspite of the fun you have had with it. I am not a smoker but i learnt breaking off the habit is not easy, however i see your determination, exposing her here goes a long way to show how much you want to quit. Keep the hard fight to quit, soon you will win. Remember it is said that users of that your girl friend are liable to die young, but that girlfriend will remain alive if any thing happens to you. May God forbid