Katy Perry's closeness to John Mayer makes her friends unhappy

Pop sensation Katy Perry's family and friends are not happy with her increasing bonding with John Mayer. They are worried about her latest choice of boyfriend as John is a casanova kind of guy who has already dated Jennifer Aniston, Cameron Diaz, Jennifer Love Hewitt, Kim Kardashian and Taylor Swift. An insider told the Daily Star newspaper, ''John has a big reputation as a serial womaniser. If people thought her ex, Russell Brand, was bad, John is notoriously a lot worse. Katy's friends are worried this is just a rebound bit of fun but will end with her getting really hurt.''