Goodbye Angel lyrics

[EveryHour]

Since Goodbye Angel is one of my fave Lindsey songs and I am a lyrics freak, please give your input on what these 2 lines are. They've driven me crazy for years, and I just can't get them! It's the first 2 lines of the "chorus":

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What could I do, my cup was full
Goodbye angel


Also~
What is everyone's take on what they sing as a group at the end?

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Just let it roll(??)

THANKS!