tell her you're going on a trip for a year, then secretly move to another house in the neighbourhood, change your name, dye your hair, grow a moustache or beard and pretend to be a french exchange student or something, then once you've seduced her and have love-punched her pink box you'll most likely have realized how much of a burden/trouble women can be and you'll realize that life as a bachelor ain't half bad ! if however you do really like her, you can stage your own (french alias') death (be creative) and then return from your year long trip as yourself and approach her on your own funeral, she'll be emotionally vulnerable and that's your chance to shine and climb up out of the shadows of the friend zone!
good luck !