If he acts nervous or overly confident, he likes you.
Look for signs such as increased interest and effort in spending time with you, compliments or flirtatious behavior, and a desire to connect on a deeper emotional level. If unsure, consider communicating openly about your feelings and observing how they respond to gauge their interest in taking the relationship to the next level.
By talking to her about it.
ask her who she likes more and if she likes your friend more pinch her and tell her off hahahahahah muahahaha
Tell your friend and tell her. If he is a good friend and he cares about the relationship, it will all work out.
If you have a friend who is a friend of him, ask the friend to ask him if he likes you.
think it just might be as a friend
Acts different around you
If you don't like him back, tell him that you see him more as a friend.
Tel him the truth that's what i did
Tell your friend if she likes him.If she doesnt have her tell him that, then just ASK him.
You tell him that your best friend likes him too,and tell yo best friend to ignore him he'll eventually love you
if you're sitting there and he's flirting wit another girl