Lyric discussion by cbcbd 

Awesome song. I think it's basically him talking about travelling back to the woman he loves. He can't stop smiling thinking of seeing her again after such a long time, his heart is racing and beating loud. Maybe he's in a plane writing this.
There might be a hint of gravity pushing them apart by turning on you and me. but then at the end it pulls on you and I - meaning that they are finally going to be together again.

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