the bottom line is he is prioritizing a preference for you to be a certain weight over your health and well being. he's a complete and total asshole and would not do this if he cared about you. and also - do you see this as a potential long term relationship (or is that something you want in life?)? because we all get older, our bodies change, maybe you get pregnant, etc - you want someone who isn't going to nitpick you as your body changes over time and sees you as a whole person first! our bodies absolutely change and that is ok! obviously: you are NTA. but please seriously reconsider this relationship. someone who loves you will absolutely care about your health and well being first.