We don’t know. It’s that simple.
The person in question, of course, is Albus Dumbledore, and the question is about his sexuality, which his creator, J.K. Rowling, has declared is homosexual. (Story is here for the two of you who just discovered the Web and hadn’t heard.)
With a series as insanely popular as the Harry Potter books are, it is to be expected that something like this announcement would create an uproar. After a decade, we finally had the last installment this past summer; we all read it quickly, wanting to know how it all turned out; and we felt a strange sense of relief that the series was over and that it ended fairly well.
And then the author makes this declaration.
One of the immediate questions is why didn’t she tell us this in the books, instead of waiting to do it this way? There has been much speculation about it, but I’m not sure if that really matters. Instead, what we should be wondering is whether this ‘revelation’ really changes anything.
I’m a strong advocate of a hermeneutic of ’solus textus’ (or ‘Sola Scriptura’ when referring to the Bible). That is, we should use only what we find within the text to interpret the text. We should refer outside the text only when doing so is required by the textual question itself. (For example, if you were wondering what was the origin of a word in one of Tolkien’s invented languages, you’d most likely have to look outside of The Lord of the Rings.) But for an issue like the sexuality of a character — something that the text should address — we should look only to the text. If the author didn’t put it in the text… well, nuts to the author. That’s her fault, not ours.
As far as I’m concerned, the question of Dumbledore’s sexuality was finished when Rowling sent the final proofs to her publisher and the book went to press. If she thinks of Dumbledore as homosexual, that’s her right. But the text does not explicitly state that and so no one can declare definitely from the text that he is. And since the text is what matters here, any statements by the author after the book has been published can be accepted only as apocryphal and not canonical. If she were to write an eighth book and in it declare Dumbledore to be gay, then we would have a text that clearly states it, but not until then.