What does it feel like to kiss a girl you're only physically attracted

Well. No huge differences, but it feels like you're a lot more "awake," (compared to being a little lost in the moment that sometimes you having little clue what's going on.)

also feels a little more rushed/restless (compared to there being an enjoyable contentment) because since there's only physical attraction, sex is the only thing on your mind too, which made kissing seem like an obstacle, and/or a stepping stone to one goal.

You have never made out with a random drunk chick in like a club or something?

Normal .... sex not mandatory to be with feelings! Yes, it'd be better if feelings involved, but not a must.

Pretty sure the physical sensation is indistinguishable, but then again, maybe not. Try it and get back to us.