You are sitting down in class writing down the notes to Mr. Snape's class, when you catch someone looking at you. It was a Slytherin boy. He caught your attention, so you decided to look at him but then look away. After Mr. Snape's class finishes, you head to the Gryffindor common room. You then hear a knock at the door, but your brother Harry advises you not to open it, yet you still do. It was the boy from Mr. Snape's class, Mattheo. What do you do now?