Professional heartbreaker and part-time rock star John Mayer turns 34 on Oct. 16, and as the "Battle Studies" star sings, "it's been a long time since 22." In those years, he's dated a lot of celebrities, and in honor of the big birthday, we list them all. Scroll through to find out who's on the Mayer hit list.
"More famous!" Mayer exclaimed. "I need to date someone more famous!" OK, so maybe he didn't say that out loud, but one-hit wonder Cartlon just wasn't going to do, so he shacked up with Hewitt, who some say is the inspiration behind "Your Body Is a Wonderland." (It was out before they dated.) Always the self-deprecator, Hewitt told People that if were about her it would be called, "Your body is a disaster."