How do you know you like someone?

And how do you know THEY like YOU?

It’s hard to describe it

Then blurting out innocently (she) that they like you. Or that they start sweating around you, or the fact that you and them feel pressured standing next to each other.

just ask them and you will know..

I can't explain it but I'm very good at telling at this point

I prefer to look at it the other way around. I recognize I don't like someone if they have bad manners, gossip about others, can't mind their own business, mmake excuses or complain a lot, and never shut up. Yakety yak yak yak.

Horsey, like someone else :'(

If they laugh at your poorest joke, they like you

Call Dr. Phil for advise.