Why do I chase after you?

Someone who's nice, smiles brightly,
even though you're not perfect-- you're so bright.

Each day, I yearn for you.
We both came into a conclusion that we can never be.
It pains my heart,
seeing how we do the usual things together.
And each moment, is like a dagger to my throat.

I can't have you
I don't want you anymore...

No more,
stop the pain.
I don't ever want to see you.

Why is it that I yearn for you so much?