"Why do we always have to learn together in the dungeons? Why not in the library or one of the study rooms in the upper levels? I swear, someday I'll suffocate in these stuffy rooms." Lily leaned her chin on her arms that lay on the desk.
"Because your morons friends would find out." Severus jotted down a line in his Potions book.
"Whatever."
"I don't think your i boyfriend /i would approve that much."
"He's not my boyfriend." She turned her head to look at him.
"Whatever." Severus leaned down to read something printed very small and his semi-long hair fell down in his face.
Lily smiled and tucked it back behing his ear for him.
"You should use the hairband I got for you. That'd look nice."
"That'd look girly. I don't need the gryffindorks to have antoher reason to beat the crap out of me."
"You could do it when we're alone... and learning." She lifted her head, took her quill and stroked something out in the book and then wrote her own line underneath it.
"Why would I do that?"
"Because I'd like it."
"So? Why should I do something that you'd like. I don't even like i you /i ."
"Pity. I'll spend my time with you anyways. Because I like you."
Years later, Harry would not notice that the Half-Blood Prince's notes were written in two handwriting styles. He had James Potter's genes, so he wasn't as brilliant in Potions as his mother had been. And because of th genes, he had also inherited the obliviousness with which he read over the "S loves L" on the last page and thought nothing to it.