"Hermione, these meetings have to stop" Snape told her after class one day. "My debt to you is paid, so consider these lessons over. Also, I will resume brewing for the infirmary by myself. Your presence is unnecessary."
"So you are mad at me" Hermione said. "Please, just tell me what I did wrong so we can fix this."
"Don't you get it, Hermione?" Snape murmured, "I must push you away. I have to be alone. Each minute you spend by me puts you in more danger, and I will not have it. You are the one student here I consider my friend, and I won't have your well-being jeopardized by your silly attachment to me."
"Listen to me Severus." Hermione resisted yelling. Snape was startled at her use of his first name, but he didn't show it. "Firstly, my affection isn't silly and secondly, you shouldn't be friendless. I want to be your friend."
"This is non-negotiable. I am too much of a danger to you."
"Thats ridiculous. We're friends!"
"I'm better off alone, Miss Granger. I've always been alone. I won't have you killed because of me."