There was a light blush on his cheeks. Sure, he has known Belgium for centuries, they may have kissed a few times during their friendship, but that still doesn't mean that the thought of kissing her once more makes him feel... strangely happy. His heart beats a bit faster and he thinks its from just putting up decorations.

"Yeah, tradition is tradition."

With that, he leans down to kiss her back, a hand on her shoulder just to maintain some sort of contact... For... safety reasons, of course, should one of them lose their balance, it'll be easier to catch them before they fall this way.