he got into a fight with someone who really broke your heart(your Ex), he got send into the detention because he got caught fighting

in the moment he entered the detention room, he saw you in the Teacher's table you were sitting on the chair and the smirk appeared in his face

"oh~? it's prezi~ I'm glad that you are the one who's watching over the detention peoples~" he say in teasing tone with the smirk in his face*