By Hannah Dailey John Mayer performed his 2009 hit “Half of My Heart” at a recent concert, and fans are shocked. Why? It’s been long, long time since he last played it for an audience ...

Taylor Swift and John Mayer are never ever getting back together, judging by the looks of things. Swift and Mayer first connected in 2009, when they collaborated on his single "Half of My Heart." ...

In 2008, Taylor Swift met John Mayer at the Met Gala ... that he wanted to collaborate with Swift on a song called “Half of My Heart.” Swift later said it was her dream to collaborate with ...