old feelings

i recently got in contact with a girl i went to middle school with, and she was my biggest crush i ever had. so we've talked a few times, and im kinda starting to have the same feelings for her again. maybe its because thats how i remember thinking about her, i dont know. the main problem is she has a boyfriend. she knows i had a crush on her back then, but i dont think so now. shes still the same sweet girl i knew back then, but i cant do anything because of this bf. what can i do to either a) stop the feelings (preferably without losing contact as well), or b) maybe get her to feel the same way without being a homewrecker so to speak

B isn't going to happen. As for A, get yourself out there and find someone else to be interested in.