Leaving You for Me

Agreed, RainbowDemon. Though, I think that either one of the following might also be true:

1. They left each other because of the differences between them and such, but one of them doesn't want to break up ("What about us?" / "What about me?")
2. One of them is leaving to pursue a dream or something like that (Roughly based on the music video for this song, which is quite good in my opinion.)