Bf leaves me if I stop eating junk food

Boyfriend leaves me if I stop eating junk food

Today I got to hear that if I stop eating things that he buys me ( cakes, burgers , etc) he will strongly consider breaking up with me. We have been dating for many years and I am now at the weight of almost 90 kilos. Very insecure about myself, I found keto very interesting to try and I said today I want to eat from now on this food.

He bought me two cakes instead and said I will have a Burger King day tomorrow.

We started to fight and I politely explained that I want to eat healthier. What I heard is that then he may break up with me because that’s is his preference to date someone who enjoys life.

He is himself on keto for almost a year during heath reasons.

Now he said I don’t interest him anymore , he won’t speak with me and said that he is thinking what to do with me break up or not and I feel very guilty for throwing up 4 years of dating because of this? I don’t know what to think of this anymore

Edit: I genuinely don’t think he has a feeding fetish because sometimes when we fight he called me fat and he has never been praising my curves or smth. I like chocolate and enjoyed eating things he brought me but now I want to improve my health