Halfway in the movie, when Rafi & Miloni both went to that movie theatre, a rat runs over Miloni's feet, she felt uncomfortable and cut to the scene of Miloni's study table.
At first, we didn't get to see what happened after that movie theatre incident, director preserved that important scene for ending where they had a small cha and Rafi says "I know the rest of the story". Director wanted us to feel the story in a very linear way until the ending scene. There we get to know that both Rafi & Miloni know their background, the social status and they're never gonna make it together in this society. After accepting this fact and the probable fate they decided to go with the flow, without uttering it.
So, all those scenes after that movie theatre, where they're spending time together, happened after that significant conversation outside the theatre.