Would you be upset?

My partner and I are At his buddies wedding rehearsal and his buddy’s little sister who is like 17 is here and they all grew up together my partner is 26 so he knew the sis when she was small. He was saying how she was super obsess as a child and she’s still very heavy now. His buddy was agreeing and then my partner looked at me and said “ she’d be so fucking hot if she wasn’t as fat”

Obviously that shocked me. Would this upset you?! I feel so upset.