I don't understand

I don't understand the way you're acting,
I don't understand why you don't understand,
I don't understand why you left me,
And I don't understand what I did wrong.

Do you still notice that I miss you?
Do you still care that I grieve?
Do you still care that my soul is on fire?
Have you ever cared about me?

I don't understand why you don't like me anymore,
I told you why I couldn't stay this way,
I never meant it to turn out like this,
Please say you'll stay.

I'll grieve over you,
And I'll continue to cry all through time,
I will never forget that you were once so close to my heart,
And that by doing that,
I am back to the start.