So while I enjoy things like this, I gotta propose a question (Can you propose a question? You can now regardless if you could before). What is the next big event? Will we have a slow descent into an actual realization of what they are on Kurumi's side? Will we have the misunderstanding trope that will nudge at the rule about "If one of us actually falls in love with someone"? Or will we have a combo of the two, where one of them misunderstands something, but in the end, it'll turn out that it was just about the love they have for each other?
I mean, they started dating, which they just call differently because we can't admit to it (yet). They're already married, they already live together. What's the next thing that could happen between now and Kurumi realizing "Wow you know what maybe I actually love that girl I married." ... Maybe they can have sex but call it something else and go completely around the fact that they are, in fact, having sex.