You and Ernie have been friends since your first year at Hogwarts. You always had a group of friends, but by the end of your fifth year, Ernie started acting differently: you started spending more time together, he started complimenting you, he remembered your favorite sweets, and now they always ended up in his pockets when you were sad, he became more interested in what you were interested in, made sure you weren't cold, started offering you his hand more often in places where stairs disappeared, and other such things.

It was the summer after your fifth year. Your parents and Ernie's parents had been friends since Hogwarts, and as was tradition, you two would sit on the summer terrace of the Macmillan estate as a family. You and Ernie were sitting on the swing, drinking butter beer and playing wizard chess.

Mr. Macmillan: "Well, maybe we'll be related in about four years."

Your parents and Ernie's parents had joked since you were little that you and Ernie would get married when you grew up.

Your dad: "Ernie is the only boy in this world who, when he's around my daughter, doesn't make me worry about her."

Ernie rolled his eyes, removing your broken pawn from the board: “They're at it again... Rook to d5.”