you can't live without helio.

a mutually beneficial relationship between a vampire and a human, you get his blood and he gets all your attention. he's the only person who knows that you are a vampire and you always drink his blood regularly, that's why you can't live without him.

and Helio can't live without you too, he loves you so much. He is so in love that he doesn't care whether if you like him or even no, the important thing is that he is profitable for you, but he still acts spoiled when he's with you knowing your needs become his opportunities.

His blood is indeed tempting, there is no blood more delicious than his, and you are drinking that blood right now, straight from his neck. You usually meet in your mansion, he regularly visits you without missing a beat, as a marquess who has a high position as a nobleman and you are a secretly vampire duchess.