A/N: Because this would be so much more hilarious than Scorpius/Rose or Scorpius/Lily
While the newlyweds began their first dance as a married couple, Harry went to stand between Dudley and Malfoy. Dudley barely acknowledged his presence, his mournful gaze fixed on the bride and groom. Malfoy managed to scowl.
"Beautiful day," said Harry cheerfully.
"Oh, shut up," snarled Malfoy.
"Don't be like that, Draco," grinned Harry. "We're family now."
"This is your fault. All of it."
Harry's grin grew even wider. Albus had wanted Scorpius to spend Christmas lunch with them and he had agreed. Harry didn't think it would have led to this but he was happy to take the credit.
"I know," he said smugly.
Dudley swallowed and finally managed to speak.
"My grandkids are going to be magic," he said thickly. "Aren't they?"
Mrs Dahlia Malfoy waved at her father as she and Scorpius danced by. Dudley forced a smile and waved back.
"They bloody well better be," growled Malfoy under his breath.
"Speaking of which, I don't see Lucius," said Harry.
To Harry's surprise, a flash of disappointment crossed Malfoy's features.
"He was too busy having an aneurism to turn up," he muttered. "I think he would have almost preferred it if Scorpius married Weasley's girl. Almost."
"You still came."
"The muggle makes him happy," he said grudgingly. "And she's not... completely ignorant of our ways."
"That muggle has a name," said Dudley coldly.
Malfoy and Dudley both glared at each other and stalked off, leaving Harry to observe the other guests. Albus and Rose were grinning at their best friend. Teddy wolf whistled at his younger cousin and Victoire was smiling beside him. Narcissa and Petunia both looked physically ill but Vernon hadn't looked more purple since Harry had received his Hogwarts letter. Andromeda Tonks smiled at her sister as she walked passed and took a seat next to Harry.
"You're enjoying this, aren't you?" he said.
A very Bellatrix-ish smirk appeared on the older woman's face.
"Enormously."