A hidden meaning

I smile at you
When I really want to cry
I keep on living
When I really want to die

I say that I love you
When what I really mean is hate
I say I feel fantastic
When I don’t even feel great

You think you know
But you don't know how I feel
You can't imagine
That all this pain could be real

You always misinterpret
What I am trying to say
When I show you the same smile
Every single day

Sometimes I wish
I was really dreaming
For behind this innocent smile
Is a hidden meaning