——On 19 October 2007, Rowling was asked by a young fan whether Dumbledore finds "true love." Rowling said that she always thought of Dumbledore as being homosexual and that he had fallen in love with Gellert Grindelwald, which was Dumbledore's "great tragedy"; Rowling did not explicitly state whether Grindelwald returned his affections.
——Rowling explains this further by elaborating on the motivations behind Dumbledore's flirtation with the idea of wizard domination of Muggles: "He lost his moral compass completely when he fell in love and I think subsequently became very mistrustful of his own judgement in those matters so became quite asexual. He led a celibate and a bookish life."
————以上资料来自Wikipedia，翻译 by 可可or微微or艾霖。