X Factor 2012: Rita Ora takes to the stage at X Factor final for the first ...

Reality star sibling Rob Kardashian is a single man after breaking up with a woman -- rumored to be singer Rita Ora -- who he claims cheated on him with 20 different men.Rob Kardashian is not done tweeting about his recent breakup, presumably from British singer Rita Ora. After posting and deleting a string of angry tweets about a woman who cheated on him with 20 men, Kardashian took toAmid allegations that she cheated on Rob Kardashian, the British pop star opens up about her split with

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