I wish she was skinnier

My friend asked me for some advice because he started seeing a woman and she is everything he's looking for in a partner but he is not attracted to her. So I asked him what does that mean attraction? Like is that like a physical attractiveness? Is that like emotional connectedness? And he said to put it bluntly, I wish she was skinnier. Oh. He said it's hard because she does exercise often and I shouldn't expect her to want to lose weight but I would say that it's hard to be physically intimate with her because of her weight. So I told him, I know you don't like it when women judge you for your height. For context he's not that tall. So just like you want women to see you for who you are, I feel like you have to give this woman a bit more time to understand who she is. But to be honest, I don't really know what the right way to respond is. What do you think? What would you say?