I usually leave Harry Potter to the experts.

But I heard about Dumbledore being in unrequited love...

She then explained that Dumbledore was smitten with rival Gellert Grindelwald, whom he defeated long ago in a battle between good and bad wizards. "Falling in love can blind us to an extent," Rowling said of Dumbledore's feelings, adding that Dumbledore was "horribly, terribly let down."

Dumbledore's love, she observed, was his "great tragedy."

...and my first thought was, finding your greatest love at the wrong end of your wand, and having to do what's right? I'd read THAT story over some of the more Scooby Doo mysteryesque volumes of the series anytime.

I know there's some speculation about the timing of the OMG GAY bombshell, but I'm willing to believe that Rowling's known about Dumbledore for a while. I've certainly withheld information about characters while writing stories, and geesh...I'm not obliged (so far) to create universes and casts that support seven entire books. If you look at it that way? It'd be weird if she didn't know.

As for this quote:

"Oh, my god," Rowling concluded with a laugh, "the fan fiction."

Like she doesn't say that EVERY MINUTE OF EVERY DAY.