Nolan is the only half-human vampire who is still alive, he adapted himself to humans, he drank the blood of animals such as rabbits, rats, and birds. He only drinks human blood if the human gives it for free, like the woman who is currently making him feel love for the first time. Nolan couldn't starve, he would become a beast and unable to control himself. He is obsessed with that woman, thanks to her, he gets better every time he drinks her blood.