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Carly Rae Jepsen has revealed that she has a massive crush on John Mayer, and she was thrilled when he sent her a gift to congratulate her on her success!

Although Carly can count Justin Bieber, Katy Perry, Selena Gomez, Miley Cyrus and James Franco amongst her ever growing number of fans, she was ridiculously excited to discovered that John was a fan of 'Call Me Maybe'.

She tells People magazine, "John Mayer sent a note in a little wooden box that said, 'Embrace and enjoy your first hit. There's more to come.' (Opening it) I was acting like a 12-year-old. He's a great songwriter - and not bad to look at!"

Carly, not sure if you've heard but John has a bit of a reputation. He was probably trying to hit on you!

Check out Carly's hilarious clip for 'Call Me Maybe'