Taylor dated John Mayer briefly in late 2009 and early 2010 after collaborating on the song "Half of My Heart" for his album Battle Studies. They also performed together at Z100's Jingle Ball concert in NYC that year. Although things seemed to be positive for a while, their split got messy. After their breakup, things took an awkward turn with Taylor's song "Dear John" from the album Speak Now. Speculation popped up that the song was about John Mayer, and years after its release, in 2012, he broke his silence on the subject and told Rolling Stone that the song "humiliated" him. For Taylor's part, she never confirmed that it was about him, telling Glamour that same year, "How presumptuous! I never disclose who my songs are about."