Taylor Swift discusses John Mayer, Jake Gyllenhaal on Ellen DeGeneres

mayer-swift-gyllenhaal.jpgTaylor Swift may be trying to play coy about the songs on her latest album, "Speak Now" - and specifically, who they're about - but she's not particularly good at it. On the Oct. 29 episode, Ellen DeGeneres asks her if "Dear John" is about John Mayer, or if it's just a "Dear John" letter.

"It could be," Swift says. "That song kind of is what it is."