@ziel_demon
Well, it's been a while since Akasaka-sensei said the manga woudn't have finished with the Confession, so Ishigami's situation isn't really an excuse do drag it out. Moreover, I don't think we'll wait this long without anything happening. After all, Ishigami's gotta build his harem.
I'm pretty sure after the confession the two of them will compete to trick the other into being the one that has to be the more clingy or loveydovey of the two.