Demi Lovato, Ex sweetheart of Joe Jonas went to the rehab following she approached know about Joe Jonas and Ashley Greene undertaking: This was termed as the main reason for her being sent to the rehab to be able to cope up with the situation but yesterday, something more interesting was added on to the story.

After being aware of Ashley Greene and Joe Jonas affair, Demi Lovato had sent Ashley Greene a very nasty E-mail, accusing her of stealing her lover. Ashley Greene answered her back with a photo of herself and Joe Jonas. Along with the pic, she asked Demi Lovato to back off the relationship.

This was just the start of the fight. From then on, Demi Lovato and Ashley Green were loggerheads. Finally, Demi Lovato had to be shifted to a rehab. In the whole story, Ashley Greene, was the culprit but sources now claim, that Demi has always been into some or the other trouble. Ashley on the other hand is a very understanding and down to earth girl.