So Weird

It’s so crazy to me as I reflect: I’ll go on a date with a guy that is a little chubby/big – and feel small/thin…and maybe that i’m out of his league…THEN i go on a date with a lean/slim guy, and feel fat…and he’s out of my league – although i’m the same weight! What is going on here!? Is it because i’m still thinking weight is a moral issue? How do I shift this?