I think I understand this song completely, mainly because I'm going through similar endeavours, only on different circumstances. I think it's about Mark breaking and his girlfriend at the time breaking up due to the distance they have between touring. They didn't lose any feelings for each other, and it wasn't a break up in the sense that they didn't want to be together, it just wasn't fair or working due to everything Mark was doing with Blink 182, and it erupted tension and waiting and stress. But since they still loved each other, Mark is contemplating trying to get her back, but it seems as if she doesn't think it would work. He feels really horrible about it, but is reminding her of the pure love they had, and telling her to remember it whenever she doubts it. And he's finding it odd how he used to be the biggest person in her life, and now he wouldn't even be considered a slight part involved. It's basically the after-effects of a break up that Mark doesn't believe should have happened.
I think I understand this song completely, mainly because I'm going through similar endeavours, only on different circumstances. I think it's about Mark breaking and his girlfriend at the time breaking up due to the distance they have between touring. They didn't lose any feelings for each other, and it wasn't a break up in the sense that they didn't want to be together, it just wasn't fair or working due to everything Mark was doing with Blink 182, and it erupted tension and waiting and stress. But since they still loved each other, Mark is contemplating trying to get her back, but it seems as if she doesn't think it would work. He feels really horrible about it, but is reminding her of the pure love they had, and telling her to remember it whenever she doubts it. And he's finding it odd how he used to be the biggest person in her life, and now he wouldn't even be considered a slight part involved. It's basically the after-effects of a break up that Mark doesn't believe should have happened.