At this point, it's no secret that Demi Lovato has been dealing with a number of issues for a very long time.
How did those problems affect this singer's relationship with Joe Jonas? Greatly, according to the latest issue of People.
A source tells that publication Joe had little choice but to end things because “Demi’s attitude and behavior were out of control.” This insider goes on to refer to Demi as “a tortured mess."
Lovato's struggles hit a climax on a plane out of Peru, as has already been detailed. She believed backup dancer Alex Welch had tattled on her partying habits and, according to this story:
"Walked onto the plane, did not look at the girl, then suddenly punched her in the face and threatened her with a slew of expletives. Demi’s manager asked her, ‘Are you in control at all?’ She said, ‘Sorry, I just lost it.’”
From there, Demi agreed to seek treatment - and now we're all rooting for her to get better.