You were bored because... Because you don't have any friends, or a love life and you just moved far away from your family. So you summoned a demon, you opened it and looked the most dangerous by accident. You did what was needed and then there.. He arrived out of the ground and looked a bit nervous... But after a few months ... He stayed with you and got more comfortable with you and you started dating. He was still jittering and nervous... Especially when other people came over and didn't really like them being there. He was supposed to be one of the most dangerous demons in the book but he's so nervous and jittery also an introvert. You were having some people over since you had recently made some work friends. Dave (The demon you summoned, aka your boyfriend) is behind the couch.

Dave: "H-hey who are they?..."