I know this isn't exactly seduction, but i would like some advice on how to act socially.

I have multiple social circles, and I've slept around with a girl or two from some of my circles.

All the girls I've slept with, I'm still on pretty good terms with, and for the most part still attracted to. i enjoy hanging out with all of them.

Sometimes it's inevitable that these social circles will clash at a party. So i'm not too sure how i should act. Do i enjoy the party, and interact equally with them? Should i be cautious displaying too much affection with just one.

TLDR: How do i hookup/enjoy myself at parties when multiple exes are there at the same time.