Demi Lovato tried to get Joe Jonas back from Ashley Greene?

A report has suggested that Demi Lovato actually confronted Ashley Greene.

Apparently Demi called Twilight actress Ashley out over ex boyfriend Joe Jonas – who Ashley is now dating.

US Weekly spoke to a source who said, “Having Ashley around all the time drove Demi crazy. At one of the shows Demi got in Ashley’s face and went nuts.”

Demi apparently had “tantrums” over the fact that she couldn’t win Joe Jonas back.

Demi recently checked herself into rehab amid all sorts of rumours – everything from eating disorder to drugs, none of which have been backed up with any real evidence.