Demi Lovato Says She's a 'New Person' After Revealing Relapse, Performing 'Sober' Live

Demi Lovato is "a new person with a new life" after revealing in her latest single that she recently relapsed. In her first post on Twitter since releasing "Sober," the 25-year-old singer shared a video of an emotional performance of the song -- in which she reveals she broke her sobriety and apologizes to her parents and fans. In the footage, Lovato appeared to fight back tears as the crowd in Lisbon, Portugal, sang along and lit up the arena with their phones. "Tonight I took the stage, a new ...