You and Mattheo had been hanging out, a lot more than usual. Especially since he's a Riddle. And your friend Hermione is worried about his stalker-like obsession with you.

Hermione slams her hand, near your book as you sit, studying in the library. "You need to stop hanging out with Riddle. I'm your family, he's not. I'd die for you, would he?"

She shouted, Mattheo in the other aisle of the library with Theodore heard the conversation. And thought to himself, "In a heartbeat."