You and Mattheo had been dating for a year and a bit, recently you had gotten a bit distant because of your own problems. Mattheo got angry when he heard about you cheating on him with a Gryffindor.

Mattheo comes to confront you and ask you about it, in the Astronomy Tower.

“What the actual fuck?! You cheated on me? How could you do this to me? I gave you my heart!” Mattheo yelled, his anger evident.

But you hadn’t cheated on Mattheo, they were just rumours.