Perez Hilton — They just can't quit each other! John Mayer and Katy Perry have had an on-off relationship for the ages, and it looks like it's back on. Or maybe they're just good friends who get tipsy together! Related: Katy Sends Sweet Care Package To Little Girl ... more info

TMZ — John Mayer and Katy Perry partied like 18-year-old's ... clubbing till 4:30 AM Thursday, and that's after John raged on stage at a concert earlier in the day with the Grateful Dead. Check out the clip below ... John and Katy were at The Nice Guy in�... more info

Stereogum — Beginning now (7:30PM ET), you can livestream Dead & Company’s performance at Madison Square Garden. The stream is part of AMEX’s UNSTAGED live streaming concert series, and this one is directed by Brett Ratner. Dead & Company is Grateful Dead me... more info

Perez Hilton — Do you enjoy your seXXXy time with a NSFW flick?! Don't worry you're not alone, since your FAVORITE celebs like to relax by watching some good ole fashioned porn too! LOLz! Whether it is John Mayer who's apparently "seen it all" or Scarlett Johansson... more info

Stereogum — Tobias Jesso Jr. is still touring with his live band Duk in support of this year’s excellent Goon, and he’s been breaking out some unexpected, seemingly off-the-cuff covers of people like Rick Astley, John Mayer, and Inner Circle. At his show at ... more info

Stereogum — While the rest of the Grateful Dead’s “Core Four” are about to embark on a tour with John Mayer under the name Dead & Company, Phil Lesh has been continuing to perform with a rotating cast of musicians as Phil Lesh and Friends. Earlier this mon... more info

Stereogum — This past summer, the Grateful Dead played a series of Fare Thee Well shows in Chicago, with Phish’s Trey Anastasio standing in for the late Jerry Garcia. These were supposedly the last Dead shows ever, and people went to enormous lengths to get in... more info

Time — "You can’t try to make something like this." more info

Perez Hilton — He likes it, he REALLY likes it! There hasn't been an overwhelming surge of support for Miley Cyrus's new album, Miley Cyrus & Her Dead Petz, but it does have one major fan — John Mayer! The Daughters singer apparently had a TON of love for Miz Cyr... more info

Stereogum — Three surviving members of the Grateful Dead — Bob Weir, Mickey Hart, Bill Kreutzmann — are about to head out on tour with John Mayer under the name Dead & Company. (They’re not using the Grateful Dead name because Phil Lesh is not taking part ... more info