I'm Ron/Hermione all the way. Ever since I read the first book. I was like "They fight so much that they HAVE to get together. They're already like an old married couple!"
But then, I enjoy relationships that start as rivalries or mutual distaste (examples- Syaoran/Sakura-CCS, Usagi/Mamoru-Sailor Moon, Jesse/Suze-The Mediator Series by Meg Cabot...)
I was hoping Luna's character would flush out more, and was kind of on a Luna/Harry thing for a while. Now I think I'm more for Harry not ending up with anyone. Kind of a Frodo-esque thing. Like, it won't be possible for him to move past the things he's going to have to experience. Or, you know, there's always the chance that he'll die ::starts crying::
But if not that, Harry/Ginny, all the way.
But my favourite HP couple of all time is definitly George Weasley and me! *glomps George*
Rowling-sama! Hurry up with the next book!