RANT- Husband wants me at one body type

I’ve talked about this on a plus sized moms page before and got completely dragged. And I honestly don’t understand why. What I said before is that I’m overweight, I’m at the highest I’ve ever been and I’m very self conscious, I don’t have any self esteem and I told my husband that I was going to start losing weight and going to the gym. He told me that he doesn’t want to lose weight and he won’t be attracted to me if I “lose my butt”. Which made me feel very bad about myself and honestly doesn’t make much since bc I met him when I was 185 and I’m now 260. I hate the way I look, but I don’t want my husband to lose attraction to me. They said that I should be happy that my husband is attracted to me and that I’m lucky that it’s not the other way around, and that Im unappreciative of my husband for being attracted to me. One girl even said that I don’t deserve him. I understand that some plus sized women don’t have the privilege of having a husband that isn’t constantly putting them down and telling them to lose weight. And don’t get me wrong, I’m happy that my husband tries to make me feel beautiful at 260 lbs. But I want to feel beautiful too and I don’t think it’s right for him to tell me that he won’t be attracted to me if I lose weight. Honestly, it’s the same thing as a man telling his skinny wife that he won’t be attracted to her if she gets fat I feel like.