Credit: FOX © 2012 Fox Broadcasting Co. Photo: Demi Lovato

Having met on the set of Hannah Montana six years ago, Miley Cyrus and BFF Demi Lovato are now at the top of the pop music charts and are living two different lifestyles.

Credit: Jason Merritt/Getty Images Photo: Miley Cyrus Shows 45% of Her Boob at 2013 Grammy Awards

"She knows how I feel about the whole partying thing," Demi dished to MTV. "I love her to death and I'm always nice like, 'Just be careful' and she's like, 'Dude, I'm chilling. It's fine.' But I care about her so much that I'm so protective, but she's good. She's got a good head on her shoulders."

There have been rumblings about Miley's newest song "We Can't Stop" having a few references to doing drugs, and Miley reportedly confirmed that

How does Demi feel about Miley's new single, even with these lines in it? "I think it's great," she said. "I think it's a good song ... It's a song a lot of people have fun to and if people are enjoying it, then great."

Demi has revealed that she steers clear of the partying scene and says that her hair is her form of rebelling, while Miley has been pretty open with her escapades. With Demi worried but OK about Miley's partying, how does she feel about twerking?

"She's twerking and she looks amazing doing it," Demi said. "I don't want to do it in public. One, because people are going to be like, 'Oh, who twerks better?' And two, I'm really tired of the word 'twerking.' It's like 'swag,' it's like, 'OK, just stop.'"

Source: MTV