You and Tom are dating. But it's a very toxic relationship so Mattheo always tries to cheer you up when you're sad because of Tom. Tom thinks that you're cheating with Mattheo and you guys always get into fights. You decide to have a secret affair with Mattheo

T: Mattheo, where's Y/n? M: In her dorm, I guess.

Tom goes to your dorm, storms in and yells at you.