[ He understands the dismay about not being able to remember anything about this place when they go back. It's something he knows full well will be a thing. He's been told it without a shred of a doubt. Sure, they could potentially come back and remember things while they're here, but once they leave... Yeah, Yuuri is right. It's not something they, themselves, can take with them.

Tenderly, he reaches to rub one hand over Yuuri's cheek, thumb brushing along the line of his cheek. ]

Even if I do "forget" this place and what we've shared, somewhere in my heart, I'll always have this. Right now, all these feelings are real and I don't want to live a superficial existence with you, even if the memory fades.

[ He leans in and presses a soft kiss on the cheek where his hand isn't and lets his lips linger, closing his eyes. ]

I plan to spend my entire life with you. There will be things in my old age that I won't remember and things you'll forget, as well. There won't be "proof" of what we went through, but it still happened, didn't it?