That is between them and don't allow yourself to get in the middle. Allow them to work things out on their own and until then you will have to divide your time between them and don't allow them to make you decide between them as that is wrong and you should not have to decide as they are both your friends and their riff has nothing to do with you. If they have a problem with this then tell them you won't hang around either of them until they get over their own problems because whatever it is is not worth a friendship between all of you.
At this point of time the best thing to do is to move on. Try to think instead of hating him/her, try to congratuate him/her. There are other fish in the sea, and fighting over one is too emotionally damagingfor both you and your best friend.
LEAVE!If you can't figure that one out, stay with him and reap the rewards of blind ignorance
When they are going out and hanging out without you, when they don't seem interested in your accomplishments and ideas, when other (outside) people and mutual friends start telling you things that they said about you and you just have that feeling that they would say something like that,nine times out of ten, that friend of yours is hating on you!
Freddie trashes the Fred videos and everyone starts hating Icarly.
Well there was some people hating on them so They killed his friend and T.I. bought the weapons now hes in JAIL
I would feel really bad and hate myself
belgium created the division to make the people stop hating them and sart hating each other
when people call other people haters that is most likely a joke, because, if you hate your sisters friend, she'd probably say "why are you hating on her/him for?" that makes you the hater.
Just confront her, tell him/her you don't feel important, and see where it takes you.
Amigo ,it is spanish for friend
Never, not 1 country stopped hating all jews or any other religion because most people arnt religiouse and dont believe in god.
What makes people change towards the other is simply the wrong attitude. It is possible the friend has started displaying a negative attitude.