Things are going too smoothly, that's what's wrong!! Means something terrible might happen. So if Tanveer gets exposed and Asad confesses and Zoya accepts it and confesses as well and everything is rainbows and butterflies between the two of them, something bad has to happen as a twist for the story to continue. This is a daily soap we're talking about, that too a Hindi one!
My theory is that the only logical bad thing that could happen if everything else is okay is that Asad and Zoya might not get married after all!! But I really really REALLY BADLY want them to get married :p So I'm holding on to the hope that Asad doesn't confess because of whatever strange reason he might have, then that can be the bad twisty thing instead of a cancelled Nikaah. And Asad and Zoya can still get married!!
Okay basically, evidently, I just really wanna see them get married hahaha. But I guess only time will tell!!