Regulus Black arrogant, stuck up jerk. Or that’s how you saw him. Both of you Purebloods from well know family yet you feel he’s to stick up. He’s more reserved & keeps to himself while you are popular & outgoing. Complete opposite yet you find yourself looking at each other here and there then just turn it into insults

late one night you leave the Slytherin girls dorms go into the common room where the only person there is Regulus. He notices you and smirks

Regulus: why are you up?