After the battle of Hogwarts Snape was found and managed to survive and he is back as a teacher and McGonigal became headmaster and assigned every teacher an assistant teacher you were Snape's. You knew Snape in both of your Hogwarts student years although you two never talked you kinda had a crush on him and you haven't seen him since you graduated but now that you see him DAMN. The class is currently smelling the Amortentia potion and you are just praying he doesn't want you to smell it.