Harry Potter author JK Rowling has revealed the secret she told Alan Rickman about his character Snape. Previous to the Harry Potter books being published we knew that Ron and Hermione would have a son called Hugo, but there was always the question of Snape's true allegiances.
JK Rowling wanted Rickman to 'stay true' to Snape, and not leave him in the dark about his character. In a 2011 interview Rickman said:
She gave me one tiny, little, left of field piece of information that helped me think that he was more complicated and that the story was not going to be as straight down the line as everybody thought. If you remember when I did the first film she’d only written three or four books, so nobody knew where it was really going except her. And its was important for her that I know something, but she only gave me a tiny piece of information which helped me think it was a more ambiguous route.
She told Alan about Snape's undying love for Lily Potter (Harry's Mammy!).. she told him about 'Always'
H/T Buzzfeed
