Katy Perry has an interesting romantic history. Scroll through nine guys – some of whom are quite famous – who have dated her here.
Johnny Lewis

The troubled Sons of Anarchy actor and Katy Perry got together in 2005 and broke up in 2006, before her singing career took off. Lewis died in 2012 in a fall from a roof, and reportedly inspired Katy’s hit “The One That Got Away.”
Travie McCoy
When Perry first hit it big with “I Kissed a Girl,” she was kissing a boy named Travie McCoy, the frontman of Gym Class Heroes. They went out from 2007-08.
Josh Groban
After Katy and Travie McCoy split, rumor had it that she and Josh Groban were an item, which he sort of confirmed only last year, saying, “We might have skated on the line of dating.” Read: HE HIT IT!
Russell Brand

Russell Brand, whom Katy Perry was married to from 2010 until December 2011, is the only man she’s tied the knot with. It was a coupling that seemed so crazy it just had to work … until it didn’t work, then it just seemed crazy.
Baptiste Giabiconi

Months after Perry split with Russell Brand, she graced several tabloid covers alongside French male model Baptiste Giabiconi in 2012.
Robert Ackroyd

Katy Perry dated Florence + The Machine guitarist Robert Ackroyd during the first half of 2012.
John Mayer

The relationship everyone loved to hate produced some actual good times as well as bad during 18 months of makeups and breakups. At least Perry can reflect on happier times with his “Who You Love,” featuring Katy, and her own song “It Takes Two,” on which Mayer plays guitar.
Robert Pattinson
Robert Pattinson has been linked to Katy Perry more times than we can count in the past year. Have they ever actually dated? Or hooked up? They’ve clearly hung out a bunch, but the hard evidence is elusive.
Diplo
The latest reports surrounding Katy Perry’s love life (besides those involving Pattinson) involve veteran producer Diplo.