Credit: Christopher Polk/Getty Images Photo: Miley Cyrus at the iHeartRadio Music Festival Village in Las Vegas, Nevada on September 21, 2013

It may be time to say goodbye to one of our favorite Hollywood friendships. Miley Cyrus is officially ready to call it quits with her old BFF, Demi Lovato, because of Demi’s new good girl reputation, according to Hollywood Life.

Sources close to the pals are saying that, while Demi used to understand the party lifestyle, now that she’s living a clean and healthy life, she’s kind of become a downer for Miley, who’s just looking to have fun.

“Demi preaches her way through avoiding partying thanks to her past and Miley is all about it,” the source says. “Miley wants a friend and not a parent, and that is exactly the vibe Demi gives off. Miley thinks Demi is a literal buzz kill.”

If we had to guess, we’d say Demi just wants to save her friends the trouble of making mistakes she’s already made… but if Miley doesn’t want to take her advice, that’s her decision. We think it’s kind of silly that Demi being sober would be reason enough to end a friendship, though.

“It is the ultimate oil and water situation between them both,” the source adds. “They are not friends because Miley does everything Demi is against and Miley thinks Demi is no fun at all. So you can imagine how that would work out when they would be together.”

Um, not well. But if Miley’s as big of a fan of drugs like weed and molly like she claims to be, the day where she, too, has to sober up will come eventually — and she’ll be wishing Demi was around to coach her through the process.

Source: Hollywood Life