"Innocent" is about Kanye West. "Back to December" might be about Taylor Lautner. "Mean" is all about her critics. And it appears that John Mayer may even be the subject of a song penned by Taylor Swift for her forthcoming album, Speak Now, due October 25.

While Swift isn't naming names on "Dear John" — well, last names at least — she doesn't shy away from calling out someone for a love gone terribly wrong. There's no confirmation that the tune is about Mayer, but some lyrics that have appeared online have everyone wondering if he's the John she's singing about.

In the song, Swift really gives it to the aforementioned guy, singing, "Dear John/ I see it all now that you're gone/ Don't you think I was too young/ To be messed with/ The girl in the dress/ Cried the whole way home/ I should've known."

Further on, she sings, "It was wrong/ Don't you think 19's too young/ To be played/ By your dark, twisted games/ When I loved you so."

A teenage Swift collaborated with the 30-something Mayer on a tune titled "Half of My Heart," which appeared on his 2009 album, Battle Studies, and the two had been rumored to have dated for a short period after they worked on the track.

Additional leaked lyrics from "Dear John" include: "My mother accused me of losing my mind/ But I swore I was fine/ You'll add my name to your long list of traitors who don't understand/ And I'll look back in regret, I ignored what they said/ 'Run as fast as you can.' "

Strangely enough, the last line of this verse is very similar to one written by the subject of "Innocent," West, in his single "Runaway" — off his forthcoming November release, My Beautiful Dark Twisted Fantasy — which he performed at the VMAs last month.

Swift recently discussed "Dear John" with the New York Post, admitting, "There's actually no surprise person on this record." She added: "I will be excited for you to hear that song, though."

Do you think "Dear John" is about John Mayer? Share your theories in the comments!