Yuuri's life and love had taught Viktor about a brand new world that he'd never known before. And thinking more about it, the same for Yuuri.. Though, to be honest, Yuuri knew of love, he just hadn't really experienced it with anyone until Viktor fell into his life; and he fell in return. Yuuko had been the first of his crushes, but knew that even though they had been young, that wasn't going anywhere. Plus her and Takeshi were meant for each other. And when he first got entranced by Viktor, well that just rested peacefully in the back of his head. At college, in Detroit, he tried dating a girl but that also didn't work out. After a while he kind of gave up on love. Yuuri continued his training and ended up at the Grand Prix, but in the end that turned out to be a failure also.
And then the crescendo of his life, Viktor Nikiforov, that's all that can be put into words. But Viktor was different than how he was perceived by the media. He was clingy, silly, and so charming. And he was able to pull Yuuri from his shell, and while he wasn't fully confident in himself, he was more so than when they first came together; especially on the ice. He became another person on the ice. Yuuri could do anything on the ice; just as long as he put his mind to it. So he added on Viktor's signature move at the end to show the man that he could still surprise him and show him that yes, he can do it. Viktor just had to one up him though.
He had showed the world that Viktor was his, and he didn't feel bad about it at all. Yuuri wanted to continue with this, but at the time he wanted to give Viktor something special. Something for his birthday that was coming up, and to show him his appreciation. Sure, Yuuri could have chosen something less... extravagant. But this would top it. It wasn't that hard to purchase it without Viktor knowing, despite them being there together.
Viktor still knew how to beat him, this far into it. Because the moment Yuuri picked up Viktor's hand and slid the ring on, Viktor did the same to him. Yuuri liked to tell himself that these were good luck charms, but he wasn't fooling himself.
This just means he'll have to continue surprising the man.
fanpet for the pairing yuuri/viktor from the anime yuri!!! on ice
first line taken from the anime and altered
image taken from the show
profile + story by hell