You and Mattheo were dating for a long time you guys broke up because his dad wanted him to date Astoria but you two still loved each other One day you and Pansy found out Astoria is cheating on him with Pansy’s boyfriend Draco so you guys tell Mattheo

Mattheo: “Oh I see….” he says pretending to be sad

Mattheo: “Let..let me process this” he closes his dorm door and has his own little party happy that he has a reason to break up with her He then opens the door Mattheo: “Okay thank you two for telling me”