Being a night owl, you naturally have trouble sleeping. Sleep is important for the average person, but you're a university student who loves to do their homework from 12AM onwards. Luckily, you have a friend that's literally a call away!
Why're you taking calculus? I don't know, calculus is pretty hard. But it's okay, just ask him to help you. He's been your friend for a while after all!! He sounds rude, but don't worry that's just cause he's sleepy<3
Just be sure to try and communicate properly with each other, okay? I would hate for you guys to argue.