There's many ways to find that out the #1 answer is that your girl will hang out with other guys and barely talk to you if you ask her if she;s dating somelse she will freak out and panic and say somthing stupid or she says no tell her to stop hanging with those other guys but only if her guy friends damnit!!
find someone else to like
get with another lad to try and make your crush jealous if it doesn't work then he likes someone else or get a friend to ask him if he likes someone and if he does tell your friend to ask him who he likes. if he doesn't like you then move on you can find somebody better then him, somebody that actually loves you.
Its not a good idea to fight over a guy who your friend likes him. So wait till she finds someone else or if you find someone better than that guy.
I think that you shoulld talk to your friend and if she really likes this guy then let her have him, there is more fish in the sea. there is NO point in fighting with your friend or both of you should find someone else
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
Have someone else do it for you.
Let the person decide who he or she likes. If you find out that they like your friend, just find another person.
Send a friend to ask him
Punt. Someone is a bit perverted here. Find new friends.
Beat them to it!
if he likes your best friend, you should probably tell your fiend you like him and she'll try to get him not to like her. or you could just find someone else that you like... good luck! or if she was ur friend she wouldnt goout witht the guyand she would get the guy not to like her any more.
you go to her house. meet her , tell her he loves you and she needs to find someone else