It's not cool.
It's how gentleman should behave.
Approach pretty and ugly women the same way. Be polite, be gentle, show humor, show your real personality.
Because you want to talk with her. Her mind is important not her body.
When she is smart, interesting and she consider you as interesting then there is a step
to consider physical attraction.
May be she is a jerk, stupid, racist, gold-digger - they just walk away regardless of her face, body, dress,...
If a man is approaching pretty and ugly woman the same way other women will see that your primary area of interest is personality.
Until is will become your nature way how to approach any woman regardless of face/body just think about all of them as ugly.
It helps.
Anyway - most funny, interesting time spent on lunches, coffie breaks was with women they didn't attract me.
But they was funny and interesting. That the reason I liked to spend a time with them.