don't change your looks because of some guy. You need to respect yourself and lose the weight for yourself. If he doesn't like you the way you are then he is obviusly not good enought for you. You can lose weight to prove to your self something but I don't think starving yourself and being thin for awhile is worth one guy you'll never end up with. you'll only get your feelings hurt when he dumps you after you gain your weight back. That is of course if you gain the weight again