Demi Lovato gunning for Ashley Greene

Demi Lovato is gunning for Ashley Greene! Sources say the teen star — who recently checked into rehab to “seek medical treatment for emotional and physical issues she has dealt with for some time” — confronted the Twilight actress over her relationship with Joe Jonas.

Demi, of course, famously dated the Jonas Brothers rocker.

“Having Ashley around all the time drove Demi crazy,” a source said.

“At one of the shows Demi got in Ashley’s face and went nuts.

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

Previous reports claimed Joe used Demi for publicity in order to bring in ratings for Camp Rock 2.

“Demi had no idea that Joe was just using her,” said one insider,” said one insider, “and when she found out that the whole relationship was “just for show she had a mental breakdown over everything.

“She felt everything was a big lie. When Joe and his father told her the truth, she couldn’t deal with anything anymore.

“She totally lost it, and nothing was ever the same after that. She didn’t know who to trust or what was real anymore. In all honesty, she loved Joe, and to find out it was all fake, destroyed her.

“She immediately started blaming herself after they split, and wanted to change everything. She tried to move on. She started seeing other guys to distract her. But being stuck on tour with Joe and his new girlfriend did her in as we see now… All her feelings just exploded at once.”

Demi Lovato gunning for Ashley Greene

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