Demi Lovato facing a cocaine video scandal

Demi Lovato’s problems are about to get bigger. According to RadarOnline, the Disney star — who recently checked into rehab to “seek medical treatment for emotional and physical issues she has dealt with for some time” — has been caught on camera snorting cocaine and knocking back booze.

“Demi was belligerent, being slutty and doing coke all over the house,” said a friend who witnessed the 18-year-old do lines of coke at a party in North Richland Hills, Texas.

“The guy who hosted the party shot multiple videos of this and what I’ve seen with my eyes, Demi is screaming, ‘F**k all of you, I’m famous, I don’t care what any of you think of me the whole world loves me.’ He shot her in the bathroom as she was finishing a line (of cocaine).”

“She was doing line after line like a pro — and she was 17 at the time,” Texas college student Brian Payne recently told America’s Life & Style magazine.

“I just remember her doing it as if she had been doing it for a long time. It didn’t seem like something new to her.”

Demi’s recent breakup with Joe Jonas also fueled her downward spiral.

“Demi’s been on a tear lately,” says an insider. “She’ll chug booze straight from the bottle.

“This is a young girl who got caught up in the fame and fortune of Hollywood and couldn’t see straight anymore.

“She had eating issues and emotional issues, and everything else got hitched along with that.”