Miley Cyrus and Jared Leto "are hooking up," a source tells Us Weekly Credit: Kevin Mazur/Getty Images

What do Hannah Montana and Jordan Catalano have in common? Probably not that much -- but the actors who played them are two of a kind. Miley Cyrus and Jared Leto "are hooking up," a source reveals in the new issue of Us Weekly. "She stayed over at his house in L.A. in early February." See the latest pics of Miley here.

That sleepover occurred just weeks after the two were photographed catching up at Clive Davis' pre-Grammys bash on Jan. 25. According to a second source, the 21-year-old "Adore You" singer and the 42-year-old Oscar-nominated Dallas Buyers Club star have "known each other for a while."

Recently, though, their bond has deepened, a third insider says. "They like to have a good time, they love to talk about art and music -- and they're both comfortable with nudity!"

Not so much with commitment, though. "Jared doesn't do girlfriends," a pal tells Us of the 30 Seconds to Mars frontman. Luckily for him, Cyrus, too, is just looking to have fun at the moment. "I'm, like, not trying to jump into a relationship," Liam Hemsworth's ex-fiancee told W.

For more on Cyrus and Leto's hot hookups, pick up the new issue of Us Weekly.