US - Their on-off relationship is hard to keep track of, but now, it may be permanently over.

US singer Katy Perry had rekindled her romance with John Mayer after a two-week relationship in August.

A source told US gossip website RadarOnline that Perry is tired of his non-committal ways.

"She needs the guy to be on board 100 per cent and she was sick of John disappearing for five days at a time, then booty calling her, then straightening up and treating her well, only to go back to his old behaviour a few days later."

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