Draco is probably the most complex character in a book ever. Seriously. And I mean, the ability he had to tell what he was doing was wrong and to struggle with it? If your parents taught you things from the day you were born, then wouldn't yo believe them? Draco knew it was wrong and tried to fight it, but sometimes, we just can't be strong enough. Or sometimes, the fight wears us out so much, that though we were close, we've lost it all.
41 months ago