more than something i think this song symbolizes taarey love perfectly as this movie as well as song depicts second time love, and how it doesn't matter whether it's first, second or third time in love which matters, what matters is the intensity.
And last part of song depicted rey remembering all the time he had hurt her, pushed her away from him, so i hope he'll get the reasons of taani's behavior.
and sorry...i forgot sweethearts...for the taareyians, by the taareyians of the taareyians.