How should I deal with how he told me his feelings?

Okay so im in love with my best friend. Ohmygod just like a tun of other unlucky people. Well hes pretty much amazing. Really really toned he works out all the time he has amazing brown eyes and his smile makes every girl I know just swoon. Im his best girl friend. And he tells me everything. He doesnt live in town anymore since he moved and he said hes always appreciated how much I stay in touch. And I told him a while ago im in love with him too…long story. Anyways. So today in study hall I was texting him and he told me “you know what I’ve been thinking about more lately? I mean I already realized it a long time ago but yea..” and so I ask him “what is it?” and he tells me he doesnt wanna “hurt my feelings.” so I get nervous. And hes like “well im in love with your personality. But not your looks. I dont like love you as a person. I know the personality makes someone. But I need looks too.” and I thought about it and im honestly not ugly even tho I criticize myself often. Its just im on the much chubbier side compared to girls he likes. And so I go “yay! Parcial love! :)” and he tells me “do you want to know why I dont like your looks?” and im like “well im assuming its everything” and he said “no its just that this is just me thinking… But your bigger and weight effects someones looks.” and I do have a weight problem. But my point being is it wrong that I wanna drop weight now? I’ve wanted to for me since I’ve never had that much motivation. But knowing he like loves me in a way makes me wanna lose weight so he’ll care in the other way. And regardless im not comfortable with my weight now..and hes told me before he likes confidence in a girl. My question being..is it that messed up what he said even though he was being honest? I know he does care and hes called me cute before, so its just my weight I guess. And I wanna change and look nice for him. And he never told me to lose weight hes always told me never to change myself but I just want to now. I dunno any advice would be amazing of you people :] thank you