Lyric discussion by Toxic 

I think he is sitting in a room and is about to commit suicide (broken glass), then he starts hallucinating, he sees the walls approaching him. Then he remembers all the times he spent with her (his lover?) and is angry at himself for being sorry. I'm not sure what the metro has got to do with it, but i thought it was something like 'the metro of his mind'. But this song rulez! If anyone has a better description than this, plz post it! :)

I think the song is about a relationship ending, likely due in part to an unfaithful partner, and The Metro (a train) is a symbol for the relationship taking it's natural course.

The soldier is symbolic of his courage throughout the relationship, right up until he reads the break up letter, and the solder (his courage) leaves, resulting in his aforementioned suicide attempt.

Throughout the other parts of the song he is trying desperately to fix it, even though he clearly understands he is not in the wrong.

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