Hi sanju15k😊
So ya doubt is how did twinkle realise that Ricky is kunj ??
Bcoz, after entering twinkles life after 5 yrs, , Rocky / Kunj started giving small hints to her and he did some small acts infront of her which reminded her of Kunj. He was doing all this for his revenge bcoz he thought that twinkle forgot him n moved on in her life , but in real , she didn't move on.
So , he did all those things infront of her like making coffee exactly the way kunj liked. Also , saying a few dialogs that kunj always used to , like we should have our breakfast like kings...and having those dishes in breakfast like kunj used to have .. like aloo paratha were his favourite as it was kunjs fav too... and telling that "I can share anything in my life, except my food.. I don't like to share my food with anyone "as Kunj used to say this.. Also, once he touched twinkle with very intimacy inside pallavis room , pretending to think that she's pallavi... so that touch reminded twinkle of their last honeymoon of goa. .
So , observing all these hints by Rocky , twinkle came to a conclusion that , every single habit of two diff ppl can't be same. He must be Kunj, she thought. So, while Rocky n pallavi were dining in a restaurant, she acted infront of him like the house is out on fire n usha is inside house.. so he quickly ran to the house to save his mom n she got it that he's Kunj only !!