It typically is never noticed throughout Hogwarts, especially the year following the war. The ritual had been thrown to the wayside during the war, of course, but now that everything is said and done, love is blossoming now more than ever. So the ritual begins again- when a couple (or more) happen to start dating, they switch ties for the first day and wear each other’s.
However, as said, it’s typically not noticed. Mainly for the reason that most students stayed within their houses to gain friends or more. They switch, of course, but switching a yellow and black tie for just another yellow and black happened to defeat the purpose. Some made a show in the Halls of removing their own ties and trading. Very few happened to trade with different colours, hardly ever another house would wear green.
This all changed one day. Suddenly, Harry Potter himself was wearing a green and silver tie. Rumors spread of why- it couldn’t actually be because of the ritual? It had to be another reason? But once Draco Malfoy (wearing a red and gold tie) entered the Great Hall, voices were raised and looks were thrown in every direction.
Calm had settled soon enough, before another uproar began a few days later. Hermione Granger walked inside the Great Hall, wearing a silver and grey tie. No rumors had time to spread, as she walked hand-in-hand with Pansy Parkinson, wearing a red and gold tie loosely around her own neck. Hermione kissed Pansy’s cheek before leaving Pansy to walk to her own table, turning to leave to the library. Pansy ignored the whispers, but was pleasantly surprised about the lack of backlash.
It was a week before talk died down once again, and another week after that before the last of the Golden Trio had his moment to shine. He was sitting in the Great Hall, biting his lip and staring at the man he wanted most- Blaise Zabini. And the man was staring right back, never looking away no matter how much Ron was flustered and kept trying to himself. Finally, Blaise stood, stalking across the entire Hall before pulling Ron to his feet, grabbing his tie, and pulling him into a kiss. The Hall immediately started talking again, loudly, some even cheering. Blaise loosened the tie around his neck, breaking the kiss and lifting Ron’s tie from around him before switching them right in front of the entire school.
In later years, Harry would pride himself on being the reason everyone ended up together. Hermione would roll her eyes, and Pansy would complain that her girlfriend wasn’t there to protect her when they first came out. And Ron would say, as he always does, that Blaise had been too damn dramatic- but, Merlin, did he love that man.