Lyric discussion by grouping 

The person in the song has been hurt by a lover, abandoned. Their heart has been broken, and the pain is so sharp, it seems like they are walking on broken glass. The imagery is like being in an abandoned house with the windows smashed, and glass all over the floor. The person says that if the lover's intention was to hurt the partner, they succeeded. It ends with a plea to pick up the pieces and save them from the destruction of their happiness.

Nail on the head. Great song.

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