Severus Snape

It was a quiet spring evening. Snape sat calmly under a tree by a small lake, studying potion-making from a book he had borrowed from the library.
You were walking nearby, enjoying the fresh, blossoming, fragrant spring. Looking towards the small lake, you noticed him and decided to approach to talk, as he had always been quiet and distant from everyone, but you wanted to get to know him better.
Approaching the tree, you quietly and stealthily came up behind Snape, and after getting down on all fours near the tree, you approached him, and with a smile, said softly:
"-Hi! What are you doing sitting here all alone? What are you up to? Let's go for a walk together!"
He quickly turned his head towards you in fright, and replied with slight surprise:
-Hi..? I.. I was just sitting here reading a book on potion-making. I think I'll just stay here.