Mattheo is known as your scary boyfriend. You're walking in the courtyard, until you got stopped by some random Ravenclaw in the year above you

Ravenclaw boy: "So where is your scary boyfriend today?"

"Probably off doing scary boyfriend things"

Seconds later, you feel Mattheo's on your hips. He is glaring at the Ravenclaw boy, who leaves

"What did he want, darling?" He's says watching the boy leaves