He’s surely made his mark on the music world, but it might not compare to his impact on the tabloid world.
Mayer makes headlines these days when it comes to his numerous girlfriends.
, the 31-year-old vocalist opened up about his ill-fated relationship with January Jones -- and politely refused to confirm reports he once dated Katy Perry. PHOTOS: Katy Perry's kooky nail art Groban hasn't had much luck dating non-famous women, either. PHOTOS: Stars on set "I play a disgruntled barista who's in a rock band and is angry at his customers.
They've been inseparable since hitting it off at a Golden Globes party in January, even taking in last week's Adele concert together.
Just ask Katy Perry, who was recently grabbing drinks with her boyfriend Orlando Bloom at Hollywood's Sunset Tower Hotel when her ex John Mayer showed up.
Perry, 31, and Mayer, 38, talked for a bit while Bloom looked on, E! The "Who You Love" singers were first linked in 2012 before calling it quits in 2014.
Jack Black becomes subject of online death hoax In February 2015 they reconciled but ended things a few months later.
News that “They are definitely back together and seeing where it goes.