Remember Ram is completely stupefied. I don’t think he will get it right away; he needs more time to process what Pri said; he knows very well that all the cues were for him to figure out what she is trying to say.
Here are the pointers:
This dialogue of his is prominent: "Priya ka woh aankhon ka ishaara hota hai naa ... us ek pal mein mujhe sab kuch samajh aata hai."
This is important b/c if she reacts to seeing Viper in the saree and glances at Ram, he will get the hint.
Also, if Sara/Bri tells him to recall the conversation, they had on their first date and Pri’s multiple emphases on truth (sacchai) and how she hates lies, then Ram will get why she wore the "no-love possible" dress.
Like her's this one: "Sach chahe kitni bhi karwa ho main bardaasht kar skti hoon, bas jhoot nehin bardaasht hoti."
So he will get that this dress she wore is to remind her to accept the reality.
Remember his monologue - "kya hai uss paar Priya, kya sunana chahti ho mujhe ... ky ishaara de rahi ho?"
Once the water is settled, he will get it. I want him to Break Down completely. He needs it. He has all bottled up emotions in his heart for 20 years, and if he doesn't cry hard, all those emotions inside will kill him.
Exactly!!!! I think too that he will get it but not instantly. He will be guided by someone. But in the promo priya is telling him telling him about his condition remember. So if going by the promo priya points it out.