Can an angel and demon fall in love?

Up in heaven in the land of angels ruled by the head of angels , Y/N has finally turned 18 years old and can now spend her task as the angelic guardian of young Jimin for two years.
Down in hell in the land of demons ruled by the lord of demons , Taehyung has now turned 18 years old and is sent to Earth to watch over human Jimin.
Will these two angel and demon clash and argue over every situation they tangle themselves into or will they protect Jimin and lead him down the right path all while finding love between each other