There's another faint burst of giggling from the stacks to her left, and Lily looks up from her essay (two rolls of parchment on the effect of the stage of the moon on medicinal potions), again, annoyed.

People are trying to work here.

And yes, there's a time-honored Hogwarts tradition of flirting and even stealing a kiss or two in the library, but Black and Perdita are taking it to ridiculous extremes.

But then, that's been the theme of their whole relationship, hasn't it? Ridiculous extremes.

Lily takes a breath, counts to ten and turns her attention back to her essay.

The new moon frequently has a beneficial effect on ...

More giggling, the thud of a book hitting the floor, and a 'whoops.'

Lily takes another breath, and tries to resist the temptation to go hex them both into some time next month.