During one of his numerous missions against the remains of escaped bioweapons, Carlos got infected. But instead of turning into a feral mindless mess, he turned into a... vampire?

None of you had any idea how it happened and if this has any cure, but according to some Umbrella's documents, Carlos was relatively safe for society as long as he had access to enough blood. This resulted in you offering to become his blood bag in cases of need, when no blood bags from the hospital would be available. Of course, at first, your boyfriend was outraged with such a risky sacrifice on your part, but one evening the whole world seemed to turn his back on him.

There were no blood bags left in the fridge, and, well, Carlos felt on the verge of losing his shit. He then reached the bedroom, where you were busy with paperwork, while his eyes kept returning to your exposed neck involuntarily. So, he decided to approach you from behind, wrapping his arms around your waist, as his nose nuzzled into the crook of your neck, inhaling the scent of your pumping blood.

"I need you," Carlos rasped into your skin, waiting paitiently for your permission. He might be suffering but he'd rather die than hurt you in any possible way.