I agree with u. Adi's love realization was not rushed. Considering the fact that this show never dragged any track before Arshad entered, the realization pace was normal. Adi was already in love with Zoya before the leap.
Initially, it was just physical attraction, starting from their first meet to the jogi mahi dance to garlands scene. I felt even Zoya was physically attracted to Adi during the jogi mahi and garlands scene. She was attracted to him even during the riots scene when Adi was lighting the candle.
Both fell in love with each other during the jungle track. During that time, both understood each other, both realized they have similar likes and dislikes, both helped and supported each other and that's when they fell in love.
After the jungle track, they started having problems due to their past and that led to Adi leaving everything and going to Paris for 6 months.
Zoya kept herself busy with her career and her family in these 6 months. She missed Adi but named the relationship as friendship because she was and is still scared of love. The fact that she was blamed by Yash for giving him only love and nothing else in their marriage has scarred her.
Adi lived a lonely life these 6 months. Zoya's memories brought him back to India. Zoya's saath was like a drop of water in hot desert for him. That's why he realized it first.
I agree from today's episode, Zoya will no more see Adi as a best friend but as a man who loves her. From today onwards, Waseem and Arshad will keep Adi away from Zoya and once she realizes she's losing Adi, she'll realize his value in her life and her true feelings for him.
Main yaha hoon would be perfect song for AdiYa. I hope they show it and I want the intense love story to make a comeback.