This right here, explains the whole scene when Harry dances with Hermione. It's actually one scene that wasn't in the book that I absolutely loved in the movie, 'cause it showed how much Harry really cares about Hermione as one of his best friends.
29 Dumbledore Quotes That Will Inspire You to Do Magical Things
29 Dumbledore Quotes That Will Inspire You to Do Magical Things: In the Harry Potter books and movies, Albus Dumbledore can do spells that make ordinary wizards' heads spin, he can defeat dark wizards in duels, but most of all, he can drop gems of wisdom
I forgot all about this line! It was one of the best in the first movie, too! And to think, where would Harry be if he hadn't picked Ron and had picked Malfoy? The whole series would be completely different.