Remus Lupin & Severus Snape

You are in Professor Lupin's office, being helped with certain details of a new lesson you have been struggling with, and you happen to notice your DADA Professor getting closer throughout the lesson. Only when you were about to point it out was when Professor Snape burst through the door, giving Lupin a goblet of some potion. Lupin invited him to stay, and he did. Now your stuck in a room with two professors you rather fancy, oh what will you do!!!?? (you fuck them, that's what you do.)