I don't understand

I don't understand
Why we can't be together
I don't understand
Why things can't be better

I don't understand
Why you are with him
I don't understand
Why you tore me limb from limb

I don't understand
Why our time together was so small
I don't understand
Why you won't even call

There are a couple things I do understand

I understand
Why I love you
I understand
Why I will always love you