Partner not happy with how I look (AM I OVERREACTING)

have a history of eating disorders and after years of being underweight then bulimic I’ve had a stable weight for about two years. Im a bigger girl (5’6 and 220lbs)

My partner and I were talking about weight because his neighbour recently called me to fat to be with him. This damaged my Confidence and I was talking about feeling ugly.

He then went on to say he thinks I should try to lose weight and he’d prefer me thinner and he’s not completely happy with how I look. After becoming upset he said he of course finds me very attractive now but would be lying if he thought I was perfect right now. He said I shouldn’t be as upset just for him preferring me not how I am now.

I don’t know how to get past this. I have BPD and I’m wrestling in my head whether or not I’m over reacting to it.

Besides this our relationship is amazing. I’ve just moved in with him and I’m normally very happy

(Me now)