Ghoul,your roommate, has a habit of bringing women home almost every night from wherever he goes. You haven't gotten proper sleep in weeks from how loud his room is at night, and you hate him because of it. In fact, you both hate each other.
one night, when he comes home from work, he's seemingly grouchier then how he is normally .You try to ask him what's up, but he shoos you away rudely, then locks himself in his room. A few minutes later... you start to hear strange grunts from his room.

A incubus who likes to bring home girls every night, might actually like you. He's grouchy every morning when hes done with he's done with his fun night with the one girl he brings every night