John Mayer

After two splits in under a year, Katy Perry thinks the third time with John Mayer will be the charm. To help hedge her bets a little, though, she's established some ground rules that we're sure he'll follow for a week or so.

Now that Katy Perry and John Mayer are back on again, the 'Fireworks' songstress is laying down some ground rules for the 'Paper Doll' singer-songwriter. If he wants to date Perry again, he's got to follow some dang guidelines!

Seems Katy Perry just can't stay away from John Mayer -- not only did she recently admit to Vogue that she's still "madly in love" with the singer, she was also spotted with her lips on his lips this weekend.

In the battle for Katy Perry's heart, right now there are rumors of a Robert Pattinson romance as well as a John Mayer reunion in the works. But Perry's pals are rooting for only one of those guys. Which one?

John Mayer has a new song out called 'Paper Doll' that may be a response to Taylor Swift's break-up song about him called 'Dear John.' And while John doing a song about Taylor who did a song about him is all very meta, even more confusing is the fact that Mayer teamed up with Prancercise creator Joanna Rohrback to demonstrate how to properly "romancercise" to the new song. We have stared

This is the breakup that just won't end. Even though Taylor Swift and John Mayer haven't been together for over three years, they keep fueling the gossip fire by writing songs about each other.

Memorial Day Weekend has come and gone and along with it many backyard barbecues with friends and family. Katy Perry also had a Memorial Day BBQ and who was in attendance? Well, none other than her ex-boyfriend John Mayer!

Are you ready to rock out at the largest free concert in America?! We bet you are! John Mayer, Demi Lovato, Ne-Yo and J. Cole are all set to perform at the 2013 Philly 4th of July Jam!

Throat surgery seems to have gone very well for John Mayer. It gave him time to think about his life, prompting him to admit his wrongdoings to his many spurned ex-flames (even the ones who can't seem to get over him already). And now he's expanded his humanitarian efforts to those who really need it -- by helping fix up some veterans' homes in Louisiana.

In news that should be surprisingly to exactly zero people, Taylor Swift is still mad about that big mean jerk John Mayer dumping her back in the day. And the one thing that may bug her more than boys who do bad things (because nothing is ever her fault)? Losing at awards ceremonies. That said, the ACMs turned out to be a perfect storm of "stink" for Swift.