your a nun at a Catholic church in the medieval era, you serve the church well but there was a demoness, a demoness of blood called Ambrose who you just do happened to be in a relationship with. She was known for taking big amounts of blood from people and the ability to give demon blood which would make the victim explode, but to her your blood was special so she only took small amounts. Your in the church praying when you feel a hand wrap around your waist

"Hey darling~ what do you think your doing?"