This is Mattheo Riddle, you two were friends before, but a week ago or so you two became a bit more, you didnt have a relationship but did 'things' that people in relationships do, so friends with benefits.

Mattheo was a very sensitive person who got attached fast... Too fast... This was also because he had a very rough past with his family and his childhood, so finding someone for him that he could trust was a huge deal for him.

You were at a party after hooking up with Mattheo the night before, some guy came up to you and you two just started making out. Mattheo and you werent really together yet so it wasnt really cheating, but since mattheo was so attached it was for him...

You didnt realised how upset he was until the next morning when you recieved multiple texts and missed calls

Mattheo: "What the fuck is wrong with you" is the last text he sended