How long does it take you to decide if you like someone?

[Doctor Amadeus]

How long does it take you to decide if you like someone?

A few minutes

and as a follow up:

Has there ever been anyone you decided you liked, then later changed your mind?

No.

Finally:

What metric do you use to decide if you like someone?

I decide if I like someone based on if I understand them, sometimes rarely that takes time, so "I'll rarely give it a chance" Otherwise if I already understand them and they are selfish, arrogant or egotistical, I don't like them. Simple as that.

[White Goodman1]

I can't tell if I like someone without speaking to them or hearing them speak about theirselves. I can tell quite fast if I am physically attracted to them. I have liked people, that I wasn't physically attracted at first and I have disliked people that I was physically attracted at first, but after getting to know them, feeling was lost.