[Grainuaile]

It's obvious that Stevie was incredibly upset with Lindsey when she wrote it...

And the planets of the universe
Go their way
Not astounded by the sun or the moon
Or by the day
You and I will simply disappear
Out of sight
But I'm afraid soon there'll be
No light


In the chorus, I think she's basically saying that even if she and Lindsey have their fights and whatnot, the universe will NOT come crashing down, and the planets will be the same as they always were.

Now I know
Well, I was wrong
To live for a dream
If I had my life to live over
I would never dream, no
I still wish you gone
I will live alone
Yes, I will live alone

Stevie's now saying that she wishes she had chosen not to be with him in the first place.

You will never love again
The way you loved me
You will never rule again
The way you ruled me
You will never change again
The way you're changing

I think this verse is pretty self explanatory.