Los Angeles, Sep 9: Singer Katy Perry and partner singer John Mayer reportedly had a huge fight before appearing for the MTV Video Music Awards ceremony.
The couple were seen in a glum mood at the award night Sep 6.
"John and Katy had been to dinner at Italian restaurant Madeo before going to the party and something had clearly gone on," thesun.co.uk quoted a source as saying.
"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," the source added.
They could not shift their bad mood to a happy one.
"Inside, their tempers were both boiling and they eventually disappeared to have it out in a private room away from other partygoers," the source said.