Sometimes this can become very awkward if you are in Love with him/her too. But you can tell by tellling maybe a girl best friend about this cute quy (or vise versa) when he is close enough to hear and then you can see his reaction. When i was talking to my friend about a cute guy, he complete yelled out "What" and me and my friend were like "Wow you don't need to know this" and he frowned.
Anyway, drop hints and see their reaction.
Ask if you like him for him, or like him because your best friend likes him - then either ask him out, or do not.
If he likes your best friend and if you find she likes him as well the best thing you can do is nothing as she is your best friend and as to not cause any problems. Boys are not worth arguing over and you can keep friends longer than a boyfriend.
Unfortunately if he likes someone else and is a friend of yours let her know and be happy for her - there are many other guys out there to pick from. the other thing is to find out if she even likes him. If not try to move in
If you like this guy and he likes your best friend and you and your friend still want to be good friends then just say what the heck and let them be together and im sure you will find a way better guy then that.
You have to tell them
you ask your crush's best friend to ask your crush who your crush likes(it may not work but just try)
You could .............. 1.ask a friend to ask him if he likes you 2.ask him yourself honesty is the best policy
Find another guy, just incase he might be two timing
ask your best friend if he likes him and if she doesnt than wait for him to get over it and he'll realize he likes you
stay out of it its not ur problem
If I was you I would try my best to find out if he does like you
Well if you like the dude, it is.