I think this is emotional abuse

We used to be in a relationship and he ended it for another girl and since we’ve been on and off. He’s always telling me things like “I wish your hair was longer” “why aren’t your boobs big?” “You should start wearing this” and he always tells me things I want to hear like getting back with him and being all loving with me then completely going back on himself and rubbing it in my face if he’s been with another girl which is awful for me. All of this makes me feel so depressed, anxious, not good enough and not worthy meaning I’ll not eat, sleep or get out of bed... I physically can not step away from it all, I don’t know why and whenever he comes back I let him in straight away or if I’ve cut off contact then he’ll message my friends to try and get in touch with me...

What do I do... help