At least one of my options from my last comment in the previous chapter came true with the result that she pushed him back. And they did it at least in her imagination
Well... this manga was never about the sex but about the love triangle and the 'surprises' that happen... this may change in the future as there will be an 8th volume...!
All those calming "it's happening", BTFO!
Seriously if they do fuck it'll be in the last chapters of the last volume. These series run on tease, not development. And now you know.
Lets see the positive here, up to this point. She thought that he was only seeing her as a way to lose his virginity. She now knows that's not the case, so the plot partly has moved forward.