Well maybe you've done something that made them upset or hurt that you don't know about. Or they've might of found out something about you that they find disturbing. Whatever the case is, ask them right away whats wrong and then you can talk it out. That always solves the problem.
You should just move on with your life and become friend with someone else and just that best friend that is not your friend anymore>
If they stop hanging around you and not talking to you that's saying that they don't want to be friends anymore and when they are acting fake>
Just treat her the way you always did. Don't ask her if she is mad anymore.
Then don't be his friend anymore.
Well if your best friend likes your boyfriend just introduce her someone else and try to get them to start hanging out and eventually she will not like your boyfriend anymore. Although sometimes they probablly act like your best friend just to get closer to your boyfriend and then all of a sudden they try to break you guys up so she can go out with him.
because your my friend and you enjoyed hanging out with him
You have a disagreement, you are not talking to eachother, you're not sure if they are your best friend anymore. :(
No, not anymore Zendaya is her best friend now.
Because my best friend is not my best friend anymore and i am REALLY REALLY REALLY upset :( :( :(
Maybe she's scared to.
The only way you will find out why your best friend is not talking to you any longer is by confronting your best friend and asking him/her what has gone wrong in the relationship.
Move on.