I Am... Yours

I am perfect for you,
But who wants perfection?
I am too good to be true,
But not good enough to be shared.
I am the apple of your eye,
But your bite is kept out of sight.
I am a constant in your mind,
But merely a whisper upon your lips.
I am the one you shouldn't love,
But forbidden is only hidden.
I am an angel from up above,
But my soul is falling below.

I am kept in your pocket,
Out of sight and close to you heart.
I cling to your broken promises;
And I never say a word.
Now, keep what's left of my soul,
Like a secret in your throat.
I will follow you to the end,
For, above all, I am... yours.