John Mayer criticizes Taylor Swift for 'Dear John'

John Mayer performs on Wednesday, Jan. 27, 2010 in Franklin, Tenn. (AP Photo/Mark Humphrey)

June 6, 2012 8:31:26 AM PDT
Taylor Swift has never revealed her target in the scathing song "Dear John," but John Mayer's pretty sure it was about him - and he doesn't think that's cool.