question for the ppl who experience at least some attraction who see this

what are romantic and sexual attraction supposed to feel like? like just, generally. i was trying to think of if i ever experienced it before but my friends are having a tough time even describing it. i'm hoping by asking here maybe some people will have more luck with the question, since the purveyors of this subreddit seem to have thought about it a bit more than your average person. any advice or wisdom is greatly appreciated!