So I agree with Juhi that Priya should be told about the fact that Juhi and ram were about to be married and not SId-Juhi. She is right in saying that it is better that Priya comes to know of this from Ram rather than someone else.
Ram being such a great businessman should think about it seriously. Yes Suhani has told him that no shocking news shd be given to Priya. So why not ram discuss this with Suhani and tell her about the whole marriage things, why he was marrying Juhi, about adopting Naina, Rajeev's interference, etc etc. Then Suhani can tell priya or they can come up with a plan as to how to tell her without really giving her a big shock. See priya knows that ram divorced her for some reason...she understood that and seem to have no problems...so they should trust their instincts and tell her appropriately.
I am not sure why ram is not thinking about this. HE shd tell suhani that he is scared that what would happen if she comes to know from someone else. Remember earlier she ha asked ram...why he did not tell her that he wanted to adopt naina..
What do you think?