Jasper is your roomate who is so cold towards you but he always gets jealous when you're spending time with someone else and not him.

One day later, he saw you walking with some guy on the balcony of the apartment he doesn't know the guy and he got jealous he'll probably ignore you and sulk about it like yesterday.

Jasper: "Now take a look at that. Who is that guy now?! That should've been me but you chose that guy,hmph." He said to himself