Did John Mayer put another notch in his belt with Taylor Swift

Just discovered the lyrics to Superstar by Taylor Swift on the Platinum Edition of Fearless. She sang Forever and Always about Joe Jonas. Yet when I read Superstar Lyrics, I see John Mayer all over it. They performed together in May, 2009.

Jessica Simpson, Jennifer Aniston, The Pizza Girl from the Jonas Brothers TV show. Who hasn't this guy been with?

You played in bars, you play guitar
And I'm invisible and everyone knows who you are
And you'll never see, you sing me to sleep
Every night from the radio

So dim that spotlight, tell me things like
I can't take my eyes off of you
I'm no one special, just another wide-eyed girl
Who's desperately in love with you
Give me a photograph to hang on my wall
Superstar
Sweet, sweet superstar
Superstar

Pizza Girl from tonight's J.O.N.A.S. Jonas Brothers show Who hasn't John Mayer been with?