So a brief on the storyline.
The guy is a superstar, and it was love at first sight for him, without even properly meeting or seeing her. Later when they meet after a few years they are at loggerheads due to MU.
The girl is from a middle class family who is cheated by her bf who takes money to go abroad. She later comes to know that he is married and she along with her father go to his place where that guy humiliates them. The ML is there as the bride’s friend and sees it. But not the FL’s face.
It is at this stage she gets an abandoned baby who she decides to raise. Years later the child becomes an ardent fan of ML and he develops a close bond with her. But circumstances make him think that her mother is very irresponsible and she too dislikes him for his attitude and rude comments of her treatment. There are undercurrents but they are always fighting.
Now the real mother comes back only for money same and demands custody. That is when he realises the truth and wants to help her after creating the entire mess. And they agree to get married for getting the custody. It’s again only for the child as they start fighting at word go.