I agree, I think Aditya is acting desperate and like a love sick puppy. The writers need to show him to be mature and understanding. Both Zoya and Aditya went through a very tough faze and all of a sudden he's expecting Zoya to fall in love with him as he has with her.
But he has to take into account and is forgetting that his relationship as Pooja herself said was based on friendship. Zoya is his first love.
He didn't fall for Zoya all of a sudden, he fell for her gradually.
I think it was that scene when they were running from Rajveer and sat in back of a van when he gave her his shoulder to sleep on that he had first thoughts of Zoya with bepanah song playing in background.
Zoya on the other hand was very much in love with Yash. She broke all boundaries to be with Yash. She will find it harder to fall in love again, she will be more cautious. She will eventually get to love Aditya. But he needs to give her space and understand her point of view. Aditya needs to make her fall in love with him. At the moment she just sees him as a friend.