i was in the same situation man. Gf didnt like it and either did my parents. In the end i got kicked out of my house, stayed with her...went to jail for weed, lost my girlfriend, then moved to north dakota with a friend lol. I regret it all. weed caused problems with her..my advice to you, dont smoke anymore. Im sure she wouldnt care if you did it maybe 1 or twice every 6 weeks or so, but dont be a pothead. Youll be hiding it and shit when your with her...it sucks man. OR you can just be super sleek about it and maybe youll get away with it