So basically ive known my GF's best friend longer than ive known her and we've never got on, she is loose or easy and gets around. to make it better of all her friends 90% of them are male. so that when on the weekend my gf will go to meet her there will be her maybe 3 girls and like 12 guys, but as i dont get along with them im not welcome. so im left explaining the situation to my friends and they agree saying im being mugged off she says she gets why im annoyed but does nothing about it.. any advice please male or female perspectives wanted!! 
Thanks for reading
user
GF's best friend is male 90% of her friends and i cant get along with them and am left explaining the situation
assistant
So basically ive known my GF's best friend longer than ive known her and we've never got on, she is loose or easy and gets around. to make it better of all her friends 90% of them are male. so that when on the weekend my gf will go to meet her there will be her maybe 3 girls and like 12 guys, but as i dont get along with them im not welcome. so im left explaining the situation to my friends and they agree saying im being mugged off she says she gets why im annoyed but does nothing about it.. any advice please male or female perspectives wanted!! 
Thanks for reading
user
my girlfriends best friend is a loose, easy going bunch of guys; i dont like or get on with them, need advice
assistant