why didnt he stop when he started having a nose bleed tf ?

cuz he’s a vampire duh

But realistically he would only get nose bleeds when he’s dizzy or would have some emergency or some shit, and it kind of says that the ml is just a red flag

He is a fucking vampire. For fucks sakes dude. Vampires don't give a shit. And realistically speaking fantasy through rl shit put the window.