Sorry that you are in this situation sis,but i have one question how long have you known your friend? even if you guys have been childhood friends women tend to hate on one another no matter how good of a best friends yu all are there is bound to be some sort of hate. Take that from me in my experience my best friend who i would bend over back words for her did me wrong by hating on my man. So i listen to what my heart was telling and got to know my man, as i got to know him more&more i relized that he really was a nice guy and that girl was just hating on him. so take my advise get to know him a pit more, evenually you will find out if he is cool or a huge drama.infact do this tell yur firend that you stop talking to him. Than see how she reactes.
Good luck,keep us posted
lates!!!