Why is Justin Bieber angry with Miley Cyrus?

The two troubled best friends seem to have fallen apart!

Pop star Justin Bieber is reportedly angry with a comment made by pop star Miley Cyrus.

The Baby hitmaker was left furious when Cyrus told Jay Leno on The Tonight Show that Bieber needs to build a nightclub in his pad and party at home.

“Miley’s comments infuriated The Biebs, who phoned the next day and warned her to keep her f****** mouth shut,” a website quoted a source as saying.

The source added, “Justin was furious. He’d really thought he and Miley were true friends – especially since she’s been brutally criticized for her own wild behavior. Miley tried to apologise, saying she didn’t feel her comments were overly critical or negative.”

“But when she defended herself by telling Justin he really needs to get his act together before he implodes, he exploded – and hung up. Now he’s telling his peeps, ‘I HATE HER!’”