To me, this song is saying that even if you love someone, when you are with them you give up the opportunity to be in other relationships that could also be awesome.
That's what I think she's getting at when she says "suppose I never ever met you, suppose we never fell in love."
what would have happened if we had never been together? Would I be with someone else?
I think these questions are the voices and the sounds she hears in her head.
To me, this song is saying that even if you love someone, when you are with them you give up the opportunity to be in other relationships that could also be awesome. That's what I think she's getting at when she says "suppose I never ever met you, suppose we never fell in love." what would have happened if we had never been together? Would I be with someone else? I think these questions are the voices and the sounds she hears in her head.