All quotes belong to Steven Moffat and the BBC. No infringement intended.
He hadn’t planned this. Not really. But it just sort of perfectly happened to fall into his lap. He remembered the baby girl from oh so long ago and how she’d mocked him for his cool style. Then he remembered the freshly- regenerated Melody and how she’d once more commented on his tie. So, when he looked at this young, emotional woman before him, with whom he planned on spending several lifetimes, a plan, unprovoked, popped into his head.
“I need a strip of cloth about a foot long.” He meant it. A hand- fasting ceremony was the quickest, most efficient way of giving them both what they wanted. He didn’t see the genius of his words until-
Ooh! He was brilliant. And clever. And she would never realize. Yes, it was perfect. He knew the sentimental woman before him was in the perfect emotional state for just such a clever plan. He smiled inwardly, keeping the Tessalecta’s face serious so as not to give himself away.
“Never mind,” he interjected, before anyone else could react. And, he untied his beloved bowtie from around his neck, and used it to complete their makeshift marriage ceremony, content in his hearts for several reasons.
And River Song, the woman who married the Doctor, forever after held a special fondness for that bowtie so loathed by everyone else. It wasn’t until years later that she reflected, after a conversation with her mother when its “uncoolness” was brought up, and she realized it had been an accomplice in his plot. That man! He’d purposely manipulated her to love his ridiculous neckwear! And, try as she might, she still couldn’t bring herself to feel anything but fondness for the traitorous thing. Still, that type of behaviour warranted revenge of a serious nature. She may have been young before, but he would learn not to mess with River Song.
She hadn’t really minded in Berlin, or any of the other times she’d seen him after that. But now, after realizing how she’d fallen into his trap so long ago, she decided he’d inadvertently challenged her on their wedding day. She was never one to back down from a challenge. And since hurting his bowtie would hurt her as well, she needed something else on which to wreak her revenge. So, when Christmastime came ‘round, and she saw him about to merrily place a paper crown on his head, she pulled out her gun and fired. He stared dismayed at the would- be hat, then looked up, horrified at her smirk.
She crossed the room and kissed him lightly on the lips, pointedly adjusting his tie, before grabbing the flimsy paper from his hand and holding it up as a prize, the smile on her face determined, brilliant, and utterly victorious. He looked from the hand still at his neck to the one holding the holey hat, realizing he’d finally been found out. Then he sighed, realizing the war she would forever wage against his headgear was unstoppable. He reached out and mournfully took the tattered crown, accepting it was the first casualty of many.