Run by Leona Lewis is a remake from the band Snow Patrol. It is about two people in a close relationship who are separated by circumstances. It is about a person giving final remarks to someone they possibly will never see again. This is one of those rare cases where I like the remake better than the original (although some may disagree with me on that).
The lyrics inspired the twist in my book Star Mates. In the story, the heroine Emmarie is in love with Pell. Humans are little more than slaves and a pocket of humanity has found asylum on a moon, and Pell leaves her to finish destroying those who want to enslave humans. She has no idea if she will ever see him again. The song is haunting.