It could make a great comedy. Have you ever read The Tales of Fred? I love books like this, it's about a vampire who is an accountant and is the most unassuming vampire ever. Next to Bill of course.
There are two Vampire series that get a complete pass on the whole vampire loving someone.
and Bill The Vampire
Both series are comedy with inept vampires who are fairly new to the game.
Fred, the vampire accountant, is pure brilliance: https://www.amazon.com/Utterly-Uninteresting-Unadventurous-Vampire-Accountant-ebook/dp/B00M6AM6Q8
Check out Drew Hayes' The Utterly Uninteresting and Unadventurous Tales of Fred, the Vampire Accountant ant its sequels.