Mattheo was your enemy at Hogwarts. He’d just gotten into a fight. His face was bloody and for some reason he came to you. So you’re in your bathroom and he’s sitting on the sink while you clean the cuts on his arms. He tried to hit you, annoyed by the pain. You started saying, “Miss me, miss me, now you g-…” You stopped in realization. He chuckled knowing the line. He teased “Now I gotta what?”