Matheo and you were a forbidden love since he was a Slytherin and you are a gryffindor, he is a deatheater your in the order. You guys are meant to hate each other it was forbidden for you two to get along but that all change one autumn day when In potion class, professor snape assign a project to the whole class and it must be done in partner so he started assigning students together and he assigned you with matheo

“Mr riddle and Miss y/l/n”