Lyric discussion by EricTheRead 

I've always thought this was the final collapse a struggling relationship. They were long-time friends who became romantic, and the breakup threatens to take the everything down with it. She (the singer) is just trying to reclaim the friendship they had before.

"Just close your eyes and then remember The thoughts you've locked away When tomorrow comes you'll wish You had today"

It wasn't always bad, and you shouldn't carry forward only negative memories.

"And as we sit here alone Looking for a reason to go on It's so clear that all we have now Are our thoughts of yesterday"

Things have changed, and we don't feel the same about each other anymore. Maybe it was a mistake to fall in love.

"If you're still there when it's all over I'm scared I'll have to say That a part of you has gone Since yesterday"

I'd like to believe we can remain friends, but you're distant/elsewhere. Even if we are friends, it won't be like it was.

"Well, maybe this could be the ending With nothing left of you A hundred wishes couldn't say I don't want to"

You're going to discard everything we've experienced over one part proving to be incompatible. I just wish we could salvage the friendship we had, but it looks like that's not going to happen.

"It's so clear that all we have now Are thoughts of yesterday"

Acceptance that they "can never go home again".

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