Katy Perry Is John Mayer's 'Teenage Dream'

John Mayer used the concert stage to proclaim his love for on-again girlfriend Katy Perry.

Mayer kicked off his first tour since having throat surgery last year, and he wasted no time in singing Perry's praises.

"She would order [food] for me... and she would tell people, 'it's nice to meet you,'" he told the crowd, according to E!. "When I was in Montana ... with bad service ... She was so patient as to continue to get to know me and love me."

He dedicated the night's final song, "A Face To Call Home," to "Katy, who is my face to call home."

We think we speak for everyone when we say, "Aww!"

-Kristina M. Dougherty, CWPhilly

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• John Mayer
• Katy Perry