Katy Perry on the Lessons She Learned From Her High-Profile Romances

Miller Mobley

Katy Perry photographed on Jan. 7, 2015 at Quixote in West Hollywood.

With just days to go before her Super Bowl halftime show, Katy Perry is laser-focused on her performance and not looking to dwell on the past.

Billboard Cover: Behind the Scenes With Katy Perry as She Rehearses for the Super Bowl -- 'The Biggest Event of My Career'

So when Billboard asked this week's cover star about her on-off again boyfriend John Mayer (the pair have dated at least twice since 2012 and she was spotted at dinner in L.A. with him in early January), Perry simply offered a lesson that she's learned about high-profile romances.

Katy Perry: The Billboard Cover Shoot

"What I will say is that to have any relationship at this level you have to just be protective and figure out how to navigate it," says Perry (who was married to Russell Brand for 14 months starting in late 2010 and was reported to have been dating Diplo last year). "There is no handbook. In all my relationships, I've learned how I have to be more careful and that it's not up for public consumption."

For the full Billboard cover story, click here.