Hollywood star Julia Stiles has split from her artist boyfriend Jonathan Kramer.The couple, who dated for more than two years, are citing irreconcilable differences for the break-up. And the actress doesn't seem to be dealing with it too well, after she reportedly lashed out at fans in New York who she thought were taking snaps of her. According to New York gossip column Page Six, Stiles mistakenly assumed a group of diners were taking photographs of her, and stormed out, saying, "Bye, guys -- glad you got your picture!"However, Stiles' representative denies the actress was aggressive: "Julia was trying to get out of the way of the picture. She wasn't being sarcastic."