Demi Lovato is doing what's best for her well-being, and sometimes that includes distancing yourself from certain people.
The 22-year-old pop star revealed during a radio interview this morning that she and fellow Disney darling Miley Cyrus are no longer friends, and now, E! News has the details behind what exactly happened between the former gal-pals.
An insider tells us that, "Miley is a wild card and Demi has made a point of not surrounding herself with people" who party too much, adding that "Demi's sobriety is very important to her."
"Demi tries to be reserved in public and cares very much about how she is perceived," the source continues, and mentions a recent encounter between the duo.
"About six months ago at a small gathering, both Miley and Demi were there. They were in the same room for a only a few moments, and it was super-awkward, very girly high-school, pretending to ignore each other. They didn't speak, they didn't even make eye contact."