In breakup news that won't shock many people in Hollywood, Katy Perry and John Mayer have parted ways yet again!

In what no one ever really believed to be a match made in celebrity heaven, the high profile couple -- who began casually dating last summer before splitting just two weeks  later, reconciling a month later, splitting for a second time  in October, then reconciling yet again -- have now called it quits once more, according to a new US Weekly report.