"Then it means you don't fancy him," Lily says. "And ... that happens all the time. People fancy you and you're not interested and the other way around.

"It's just a lot more awkward and awful when it's a friend.

"Especially once it's out in the open."

There is a reason Lily cut Severus off every time it sounded like he might say something along those lines.

"You are not under any obligation to fancy someone just because he -- or she -- fancies you. Ever."