The first meeting between Lily, her boyfriend James Potter, and the engaged couple, went badly, and the relationship nose-dived from there. James was amused by Vernon, and made the mistake of showing it. Vernon tried to patronise James, asking what car he drove. James described his racing broom. Vernon supposed out loud that wizards had to live on unemployment benefit. James explained about Gringotts, and the fortune his parents had saved there, in solid gold. Vernon could not tell whether he was being made fun of or not, and grew angry. The evening ended with Vernon and Petunia storming out of the restaurant, while Lily burst into tears and James (a little ashamed of himself) promised to make things up with Vernon at the earliest opportunity.

This never happened. Petunia did not want Lily as a bridesmaid, because she was tired of being overshadowed; Lily was hurt. Vernon refused to speak to James at the reception, but described him, within James’ earshot, as ‘some kind of amateur magician’.