You need to remember you’re dealing with two things: a person and a line.
The person is very much focused on chemistry… he likes a pretty face and hot body as much as anyone, but both are meaningless if a girl can’t do as she’s told and make his life better.
The line, meanwhile, is surprisingly deep, and working your way through it can be a slow process. That’s when looking like a dainty, easily-manhandled ballerina or a sweaty little gym-monkey with big eyes really pays off… it’s easier for you to become a priority when looking at you is fun.