How do you know if a teenage guy likes you?

Answer 1

To me, I can always tell if a teenage guys likes you when he flirts a lot, flips his hair, and stretches. Hope this helps

Answer 2

You might notice that he goes out of his way to talk to you, spends more time with you, or compliments you. He may also act nervous or awkward around you, or try to show off to get your attention. Ultimately, the best way to know for sure is to directly ask him how he feels.