I think this track is for Shivay's NKK realization and redemption for his forced marriage with Annika.
Upon careful consideration of tweets from Harneet, I feel that they would show Shivay swapping the Groom with Dev, after finding out about ACP blackmailing and he realizes that he has been wrong about Dev.\
Remember Dec's father said that, you will be in a helpless state and then you remember me. I think now the tables have turned and Shivay learns from this.