Sakura and Syaoran stutter a lot when anyone brings up the topic of their obvious feelings towards one another – they stammer, and blush, and Mokona giggles when watching them because it’s quite clear that if the two of them got over being too embarrassed to say so, they’d see that they’re both equally mad about the other. Fai enjoys pushing them close, teases them gently, and leans back against the nearest wall and speaks to his grumpy companion about the sweetness of young love. Kurogane undoubtedly grumbles something back at him and stalks off – pursued, quite often, by Fai teasing him just as much, laughing and leaning and murmuring sly silly nicknames that cause Kurogane to give chase. (And this, of course, is classified as the mage being a pest, and the ninja being too grumpy for his own good. Always. Nothing more, and nothing less.)
Mokona giggles just as much watching Kurogane and Fai. Though Fai-mommy and Kuro-daddy are the ‘parents’ of their little group, they’ve clearly just as much growing-up to do as the kids.