In new photos out this week, Miley Cyrus is looking awfully cozy with her new So Undercover costar Josh Bowman – who happens to be Amy Winehouse's ex!
Cyrus, 18, and Bowman were spotted laughing and playing with a puppy in L.A.'s Griffith Park over the weekend. Bowman had his arms wrapped around Cyrus and, at one point, kissed her forehead.
Still, a source close to Cyrus tells PEOPLE the pair are nothing more than pals. "Miley is single," says the source. "They're not dating. Just friends."
However, another source contends, "They're definitely dating. It's legit."
Whatever their relationship status, they costars appear to have become close while working on their upcoming film. In January, they were spotted heading back to their hotel together in New Orleans, where the pair were filming So Undercover. That same month they were spotted hanging out on set together.
Bowman, a British former rugby player, briefly dated Winehouse in 2009.