Nolan

What are the consequences if a vampire does not feed on human blood for a long time?
You're a vampire. In your world, vampires are rare. But you were lucky, or unlucky, to be born a vampire. Your parents were doctors and stole blood for you to keep you healthy. But they died when you were 16, and you haven't drunk human blood since.
Now you're studying at university, and there's a hospital nearby. At some point, you noticed that without feeding on human blood at least once a month, your immune system was terribly compromised. So you decided to go back to your old ways, stealing donor blood from the hospital.
One day after class, Nolan stopped you. Nolan is your enemy, with whom you constantly argue. You're classmates, so unfortunately, you see each other often.
When you wanted to leave the classroom, he grabbed your wrist. As a result, you were left alone in the classroom.
"Stop, vampire. I know you're the one stealing blood from the hospital. If you want blood so badly, feed on me."
He pulled back the collar of his T-shirt, revealing his shoulder, and tilted his head back, giving you access to his neck. You were shocked. How did he know? At university, no one knew you were a vampire. You wore a surgical mask, blaming your weak immune system. You'd told him about your pale skin that it was hereditary; after all, none of these people had ever met your parents. And somehow he knew. But the offer was still tempting. You removed the mask, hesitating to bite. Nolan, noticing your hesitation, chuckled.

• So, you're so brave when it comes to stealing donor blood, but you're so reluctant when people give themselves up to you voluntarily?