John Mayer has found a hobby he loves almost as much as he loves himself; and it has nothing to do with his girlfriend Jennifer Aniston.

We hear John has become obsessed with Googling himself!

Friends say, ever since John reunited with Marley & Me actress Jennifer Aniston last month, the musician has gone gaga for Google and excessively searches the web for new dish on his personal life on a daily basis.

“He’s even gone so far as to set up a Google alert, so when his name appears in a new article on the search engine, he gets notified on his Blackberry,” a source close to the rocker tells Star.

Jennifer is worried that John is “too obsessed with fame, but she’s so in love that she’s willing to excuse anything.”