John Mayer

Off and on couple John Mayer and Katy Perry are firmly back on -- possibly permanently, if he has anything to say about it, because some sources are saying he's asked her to marry him.

John Mayer has a confession of his own about that heartfelt, confessional duet with Katy Perry: It almost didn't happen!

John Mayer loves Katy Perry -- and he also loves her massive new single, 'Roar.' The 'Paradise Valley' crooner couldn't stop bragging about his lady love's new song, as well as his collaboration with her, 'Who You Love.'

For someone who likes to call his relationship "private" when asked about it, John Mayer had no problem gushing about Katy Perry onstage in front of a slew of cameras this weekend. It's almost like he had an album to promote or something!

Although John Mayer was recently spotted celebrating Independence Day with ex Katy Perry, it’s been awhile since we’ve seen him on TV. However, the charming singer made a comeback this morning (July 5) on NBC’s ‘TODAY,’ where he performed a few songs on the scenic outdoor stage and filled us in on his recovery from his vocal cord procedures.

In our least favorite couples trend, recently reunited duo Katy Perry and John Mayer showed off their patriotism in matching stars and stripes outfits. Blergh. Remind us again why it's disrespectful to let a flag touch the ground, but it's totally cool to wear it all over your body?

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!