Confused

My bf and I have been dating for close to four years now. We've recently moved out into our own apartments to take a break from living together since we were always fighting over little things. We still stay over at each other's houses and what not. lately I've asked him to help encourage me to keep going to the gym. He's been making rude comments like "you shouldn't eat that you didn't go to the gym" or "you're eating, go to the gym" obviously I've let him know that he's being rude about it not helpful. Lately I've been feeling like not even eating. I constantly tell myself I'm dumb for wanting that cake or brownie and I'm fat. I feel awful. Also he keeps making comments about my phone like I'm hiding stuff from him. Pretty much I feel like o deserve better but idk. I feel like I'm overreacting? Anyone have any advice?