All the folks talking about consummating or whatever... They're still mostly strangers. She understands he needs time to get used to this state of affairs, and she also needs to acclimate to living with a male after so long
nearly a century of living with only the women of the Tsukuyomi family, I'm pretty sure. Yes, they're married, but they're both still unaccustomed to spending time with each other, as much as they have legitimate affection between them. If ye be pure of heart... I doubt you could just jump right into bed and bang a girl you just met, even if legally you're allowed. I'm pretty sure I'd struggle with it, that's for sure. I knew my ex for years as a friend before I started dating her. Shit started accelerating pretty quick after that, but still, we were familiar with each other by then.
So, yeah... gonna be dealing with the two of them realizing all the things they can do with each other from hand-holding to kissing and beyond, gradually, and it'll be sugary sweet and wholesome the whole way.