Lyric discussion by davidwhitney 

"And the plaster dented from your fist in the hall where you had your first kiss reminds you that the memories will fade."

just thought I'd add something to the above, I think this part is showing where the upset lover punches the wall in the hallway at the memories, in painful realisation so to speak when the memories flood back. I've done this myself in a pretty much identical situation...

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