John Mayer

Katy Perry and John Mayer got back together just in time to promote their new albums. Isn't it great when romance is so convenient? The duo each have records coming out soon, and a track from Mayer's 'Paradise Valley,' called 'Who You Love,' has hit the web -- and it features none other than his on-again off-again love.

Katy Perry admitted to being madly in love with John Mayer in her Vogue cover story earlier this summer, despite being broken up at the time. They were seemingly reunited on Fourth of July and now, they get romantic on the song 'Who You Love,' a slow-burning, 'early '80s-inspired soft rock duet.

Katy Perry's Relationship Rules For John Mayer.

A random encounter with newly-reunited couple John Mayer and Katy Perry in a New York City guitar shop last week brought one lucky fan much more than just a great photo: Mayer actually bought the aspiring young musician a guitar on the sly.

What the what? These two lovebirds are moving at lightning speed! Not only have Katy Perry and John Mayer reunited (and it feels so good!), but there are now reports circulating that they are moving in together. *Gasp!*

Lady Gaga, John Mayer, Seth Myers, More

If the matching patriotic shirts from Fourth of July didn't convince you that John Mayer and Katy Perry were an item and "on" again, perhaps this video of Mayer, revealing how and why he fell in love with "my Katy" while performing a 'A Face to Call Home,' will...

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!

When John Mayer performed on 'Today,' there were a lot of questions about his songwriting inspiration. Namely, was his new song 'Paper Doll' about a certain Taylor Swift? Mayer's answer -- or lack thereof -- was pretty telling.

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?