After months of speculation, Demi Lovato is admitting that she's dating Joe Jonas, her old friend and onscreen love interest in two "Camp Rock" movies. In a new interview and on Twitter, the Disney star finally owned up to her relationship with the teen heartthrob.

"He's actually my best friend," she said in a radio interview with Billy Bush, who then asked if they went from being a couple to being friends. "Um, no, kind of the opposite!

"Yeah, he's my best friend and he's incredible," the "Sonny With a Chance" actress continued. "He's a complete gentleman; he takes me to the most amazing places. ... He's perfect!

Lovato, who was recently seen with Jonas at the Vanity Fair Oscar party, said she's digging the glasses Joe has been wearing lately. "I think it's adorable and it totally suits him," she said.

In the past, Jonas has been linked to Taylor Swift and Camilla Belle, while Lovato was said to be dating Trace Cyrus, Miley's brother. Jonas and Lovato recently recorded a song and music video together for the charity single, "Make a Wave," a part of Disney's 2010 Friends for Change: Project Green.

"By the way... I would never lie to my fans," Lovato tweeted on Saturday, seemingly referring to news of her relationship status. "I love you all ... and I've never been happier."

Last summer, when MTV News caught up with Lovato, she said she tries not to be bothered by gossip about herself. "I try not to listen to rumors," she said. "Rumors are stupid. They're not true. I mean, of course you get stuff like that all the time. You read it online, and you're just like, 'Why did they even make that up?' But, I mean, I don't really remember them, 'cause they're not important to me."