im 15, and im in love with a girl. i've been friends with her two years. i've told her i liked her twice, but never asked her out. i miss her whenever im not with her, and i cant stand it when i think about her with other guys. she also smokes, and i really want her to stop because im scared shes going to get hurt, and i dont like the people she smokes with. my uncle never smoked, and he just died of lung cancer, and im scared of what could happen to this girl if she keeps smoking. i really want to tell her how i feel, but i don't know what im going to do with myself if she wont give me a chance. what should i say to her? please help.=)