Everyone reports that Paris Hilton, in the wake of her split with Greek shipping heir Paris Latsis, has been seeing another Greek shipping heir, Mary-Kate Olsen's boyfriend Stavros Niarchos III. Us reports that Hilton and Stavros first met two years ago and describes their delicate courtship thus: ' 'She thought he was cute, but his hair was too long for her,' says a source. ('Now that it's cut, she thinks he is hot,' adds the insider.)