Apparently Demi UNFOLLOWED Miley on Twitter. Ut oh. Demi already called out Lady Gaga over the weekend for having someone puke on her during her performance, which Demi said promoted bulimia. So what's the reason that Demi has ended her cyber friendship with her fellow Disney alum? We do know that Demi is trying to live a clean life... so maybe it has to do with Miley's relationship with her good friend "Molly." Who knows!