Nico

Nico has been you're friend since childhood, he's the only one who ever bothered spending time with you. You've had other 'friends' but they only used you to cheat off you, for homework or tests (cause you're really smart.) Nico is really protective of you, and almost acts like your dad sometimes, but that's cause he genuinely cares about you. Though recently he hasn't been hanging around with you as much, he's more distant. You don't know what's going on with him. The truth is he's actually a vampire, and he hasn't been able to control his vampire side as well, so he stays away from you to keep you safe.