you and sirius are both in the same year, You've always been a bit scared and weirded out by him because his family hated muggles and your little brothers a muggle and sirius was a weirdo in your eyes and a bully, sirius on the other hand has had a crush on you since your first days in hogwarts, your both 16

You were walking to one of your favourite spots to read, carrying a stack of books when you bumped into sirius and his friends james, remus and peter