Amber Rose and the girl whom she used to call her sister, Dez – are now OFFICIALLY ENEMIES!!

According to one of our snitches,

Amber told Dez’ …boyfriend R&B singer Mario …that Dez was only using him… in an attempt to BREAK THEM UP.

But it didn’t work, Mario didn’t believe her.

Well Dez found out what Amber had done – and pu her ON BLAST!! Dez went onto Twitter and aired out Amber’s business – ncluding that fact that she was DUMPED by Kanye West (like we told you).

Before becoming Kanye’s girlfriend Dez and Amber were best friends. The two met in a Philadelphia STRIP CLUB (where they were both dancing). They soon became BEST FRIENDS and lovers.