2 months after the explosion, Matt walks into the room that Mello and he share. Mello is sitting, eating a chocolate bar with his gun in easy reach.

"Hey, Mello-swello! Get it? 'Cuz you're a real swell guy?"

Mello looks up and gives Matt the fiercest glare he could muster.

"Well, Mellodramatic, that was a little unnecessary, don't cha think?"

Mello then grabs his gun off of the bedside table and shoots the doorframe right next to Matt's head.

"Ok, guess I'll catch you later then, Marshmello!"

And with that, Matt left the room closing the door behind him. Mello sighed and followed after minute, because Mello also thought Matt was a "pretty swell guy."