So my fiance just told me I need to lose weight...

I asked him if he was still sexually attracted to me bc he used to want sex all the time and now I feel like I almost have to beg him for it . He told me he was but " if I lost some weight it would be fire " . I have always been a bigger woman and have always felt shitty about myself and I thought i found someone who over looked that but i guess i was wrong. Now my feelings are hurt, i feel absolutely disgusting and want to crawl into a hole and never come out. He wasn't mean about it or anything but still, it's like now I have to lose weight or forever feel like he is wanting something that I'm not.

I just want to be beautiful.