I think this song means . Undo the hold you have on my heart and let it be free again . Before you go , have some mercy and unlove me . This song seems to convey the longing to turn back time to a place where the speaker never met the person they fell for . The idea of it being better to have loved and lost is challenged here , as the speaker ponders how it would be like to never experienced love in the first place . It's like trying to undo something that has already happened , it's simply impossible . Unlove Me
