mizuhara declares some stupid shit like: "maybe we shouldnt see each other for a while"... only because thats whats been happening since the very beginning ... lots of stupid shit...
of course he messed up. What am I even thinking? jk. At some point, I just read this manga for the girls, art, comedy and also the chat section because it is hilarious af XD
Why even end it there? We all know what will happen: he will drop his spaghetti ultra-hard and act like a bumbling idiot till she tills him it's okay and to forget about it, he will say something like "wow Mizuhara sure is composed, as expected of a rental girlfriend" and then we will be shown that once he wasn't around she blushed like crazy, which apparently counts as developing their relationship in the author's books.
It's impressive that people actually spend money on this manga enough such that it has lasted for 81 chapters. You could read chapter 1, 25, 64, or 81 and not have missed a damn thing, hell, you'd probably be better for it.