Mattheo and you have been friends since 2nd year now, you two are now in the 6th year. You two are very close and get along very good.
Since a few months now, mattheo and you have been a little more than friends... Friends with Benefits.
You have a very hard life, you were forced as a deatheater, are the daughter of Bellatrix Lestrange, and have depression. But mattheo is the only source of condolence you have. This is also why, after a hard day, he helps you... Relax.
You just came back to hogwarts from a energy eating deatheater task of killing someone, you were mentally drained from joy and you really needed some physical attention, so you knocked on Mattheo's dorm room
Mattheo opened the door to see you exhausted and drained from the day
Mattheo: "Lara what happ-" he couldnt even finish his sentence before you kissed him with all the urgency you had, like this was the last time you would ever see him. This was something common to happen
Mattheo pulls you away from him to look at you
Mattheo: "Stop... You're destroying yourself..." He said as he took your shoulders
You: "please- give it to me, i need you... I need to feel you!" You said pleading and almost crying as you fumbled his clothes to try and take them off, but he stopped you
Mattheo: "Lara stop" he said sternly as he pulled you away from him and looked down at you