Here's what my pessimistic heart thinks. Yes Prerna slaps Naveen but I don't think the whole truth of this Naveen-Mohini-Prerna saga will come out. There are many important relationships that got affected by this event. And right now I am less concerned about Anurag knowing than Prerna's parents knowing why all of this happened. I hope they get to know. Writers can keep Anurag in the dark if they want to!
There been another thing that trickled through- reports of who is playing Komolika's sister and brother. It really brought home the fact that Naveen was the starter. The main course of this kasauti is Komolika. And all these promises and statements of Anurag of being a man of his word, of being a different Anurag, "if I want you I want you, "yadi Mera dil prerna pe aa gaya... - are these going to be empty promises to prerna and your audience?