They were in potions class, when the bell rang at the end of class Snape said

That's all, any questions?

An idea crossed your mind and you asked without hesitation.

You are single? You said with a certain mocking and mischievous tone

About class Miss Malfoy

Oh, no, then you gave him a cynical smile, which he returned, adding

to arrest now

And what is the punishment, professor? You said with a mischievous tone hidden between some innocence