Katy Perry goes off her rocker after blazing row with John Mayer

RUSSELL Brand is not the only one finding that his love life is more tangled than his favourite yoga position.

His ex-wife Katy Perry is also having a turbulent time with her new bloke John Mayer.

The couple had a bust-up after the MTV Video Music Awards on Thursday night in Los Angeles.

There were already rumours that Katy and John were on the rocks and they didnt do much to stop them as they attended a bash at the Beverly Hills Hotel.

Katy Perry at MTV's Music Video Awards

Hot n Cold ... Katy's mood shines through as she poses on the red carpet at the MTV awards show

A source said: John and Katy had been to dinner at Italian restaurant Madeo before going to the party and something had clearly gone on.

When they turned up to the Esquire event, Katy was walking well in front of John and it was clear they had just had a fight.

Inside, their tempers were both boiling and they eventually disappeared to have it out in a private room away from other party-goers.

Kate Perry and One Direction at the VMAs

Glum ... Katy Perry looks fed-up as she gives MTV gong to One Direction

At least that stopped the others at the party feeling like they were reliving their parents rows.

Since splitting from Russell at the end of last year, Katy has been in a relationship with Florence And The Machine guitarist Rob Ackroyd before moving on to John.

Russell has been pretty busy and dated actress Isabella Brewster and Spice Girl Geri Halliwell before being snapped with student Aimee Levoir this week in Suffolk.

Katy and John, pictured top leaving Madeo, got together in June after hooking up at Soho House in West Hollywood.

They split briefly last month but were spotted back together a week later.

! Rihanna and Katy Perry

In discussion ... Katy and close pal Rihanna talking at the VMAs

WENN

US crooner John has form for dating A-list women hes been out with Jennifer Aniston, Jennifer Love Hewitt, Jessica Simpson and Taylor Swift.

Taylors new single We Are Never Ever Getting Back Together is rumoured to be written about him.

If things dont improve for Katy and John, shell be asking to record a cover of the track.