Okay so my best friend hates one of my REALLY good friends. Lets call the really good friend jenny and my best friend randee. So randee made me promise to not be friends ever with jenny because jenny started hating me and randee. So me and randee made that promise but now jenny is being sort of nice to me and randee is all like "i thought u hated her." and I have no idea what to do. I don't want to break a promise to my best friend but I'm not sure if this promise is really worth keeping :( :P .

Is this the same best friend that you are celebrating an anniversary with?
You need to talk this out with them, maybe they are jealous of losing you to a new best friend? Talk about it at the sleep over:)

Okay thanks :)