Demi Lovato and Miley Cyrus go way back. The roots of their friendship are deep.
While Cyrus is twerking, espousing her love for green stuff and partying hard, her pal Lovato walks the straight and narrow, since she has to, given the potential triggers and the personal / physical issues she has endured over the past two years. D. Lov has offered some words of concern for Cyrus, but it's not exactly an edict or an intervention. She's just looking out for her gal pal.