So.. Dumbledore's gay?

So I read today that J.K. Rowling has announced that Dumbledore was actually gay with his friend, the wizard he defeated named Gellert Grindelwald.

For those of you who aren't Potter fans, Gellert was a wizard that Dumbledore knew in his boyhood. They became best friends, but later, Dumbeldore became dissapointed in Gellert's interest in the dark arts, and his attitude towards muggles.

The article is here.

Now, I honestly don't know how to take this. On the one hand, yay for having a gay character who is also respected and loved. On the other hand... why the hell couldn't she have just written that in the book? I got so sick of Rowling's cryptic bullshit, after the 6th book. The 5th was great. The 6th left me so goshdamn angry. Really. If you want your character to be gay, don't beat around the bush and reveal it later. Come out and say it. You don't have to mention their sexual activity or anything like that, but giving your reader enough information to know what type of relationship your characters have is what makes a good writer. Leaving readers in the dark and then going, "a HA! I fooled you all!" is not the mark of a good writer.

I'm really dissapointed in Rowling, now. I think the last Potter movie is probably my favorite, of them all, and I am really afraid of how the last two will go.