LOS ANGELES: Demi Lovato has opened up about the extent of her cocaine problem. The actress and singer, 21, told Access HOLLYWOOD that she hit rock bottom at 19. “With my drug use I could hide it to where I would sneak drugs. I couldn’t go without 30 minutes to an hour without cocaine and I would bring it on airplanes,” she said. “I would smuggle it basically and just wait until everyone in first class would go to sleep and I would do it right there. I’d sneak to the bathroom and I’d do it. That’s how difficult it got and that was even with somebody [with me], I had a sober companion, somebody who was watching me 24/7 and living with me [and] I was able to hide it from them as well.–SH