The Perfect Match

Albus and Scorpius are in their sixth year at school. Albus is popular while Scorpius is quiet and bookish. A chance encounter makes Albus realise that Scorpius is probably the most interesting person that he's ever met. Draco is the potions master at Hogwarts and Harry is the head auror. They become friends as Harry's marriage unravels. Detailed summary inside.