Russell and Keith don't believe he's a good choice

Katy Perry, 28, may have moved on since their split but ex Russell Brand, 37, thinks she’s making a big mistake by dating John the player’ Mayer, 35.

Russ has even appealed to Katy‘s parents, whom he’s still in touch with, and Katy‘s dad Keith has backed him.

Our source says: He’s touched that Russell‘s still trying to protect Katy. But she’s furious with her folks and says they’ve betrayed her.’

Read more about Katy Perry in Now magazine dated 3 December 2012 – out now!  

49-Now-cover.jpg

SEE PICTURES Katy Perry stuns in sexy see-through dress at MuchMusic Video Awards 2012

SEE PICTURES Russell Brand and Katy Perry – a love story in pictures

SEE PICTURES Russell Brand and Katy Perry in Celebrity Splits 2011