Someone once asked...
Someone answered with kindness...
Hmm thats a hard question. Why do you hate your friends gf? Is she harming your friend? Or maybe you two arent going well with eachother? I think its a good idea to talk to your best friend and to explain your problem. You two can meet up alone maybe and chill without his gf from time to time. if your best friend is happy i would not go in between them.