demi lovato drugs joe jonas 550 getty Report: Demi Lovato's downfall included drugs and Joe Jonas [Update]

Daddies, don’t let your daughters grow up to be Disney stars. New accounts of pop singer and “Sonny with a Chance” star Demi Lovato’s antics before checking into rehab for what her publicists have called “emotional and physical” issues are surfacing. Natch.
While accounts of her physical altercation with a dancer on the Jonas Brothers tour tells part of the story of her downward spiral, Texas college student Brian Payne tells Life & Style magazine that she was all up in the white powder at a party in North Richland Hills, Texas.
“She was doing line after line like a pro — and she was 17 at the time,” Payne describes. “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.” 

]]>“Inside” sources tell the magazine that the pain of her breakup with Joe Jonas only increased Lovato’s self-destructive tendencies. “Demi’s been on a tear lately,” says the “insider.” “She’ll chug booze straight from the bottle.”

Apparently, it was the altercation with the dancer that spurred her parents into action. “They overheard one of the dancers talking about it and freaked out,” says the source. “They heard Demi was drinking, but the news that her partying was getting out of control shocked them — and they confronted her immediately.”
Girls, just say no to Joe Jonas.

[Update 5:10 p.m. ET In response to the increasing speculation that Lovato was abusing drugs and alcohol, her rep tells TMZ: “Demi Lovato is not in treatment for drug or alcohol addiction. As we have said since she entered treatment last week, Demi decided to seek help for emotional and physical issues she has battled throughout her life… She has taken this step in order to get her life in order. While we know many are interested in Demi and her life, we do ask for a modicum of privacy during this difficult time.”]
Follow Zap2it and TheRealJethro on Twitter and Zap2it on Facebook for the latest TV, movie and celebrity news.

Photo credit: Getty Images