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When Rowling read the script for the sixth Harry Potter film, she noticed a line where Dumbledore mentioned a girl he once had a crush on when he went to Hogwarts. It was at this point that Rowling revealed to the film makers that this wouldn't do because she had always seen Dumbledore as being gay... The cat was out of the bag and well, you know the rest. (Unfortunately, I can't take credit for this beautiful photo, I found it at images2.fanpop.com)