Young girl

I'II be here right now by you're side.
I know you're heart hurting right now.
But you don't know.
It's feelings like invisible.
You think a gun, count to three.
You can see my heart beating.
But I'm not leaving, i will be by you're side.
Sometimes It's just not feeling be happy.
It's just hurting so bad, I can't never ever stop to crying.
Nobody can't understand my
With my heart feeling and hurt so bad.
Sweatin now, moving slow.
No time to think, my turn to go.
But you can't never see my heart beating.
It's killing inside my heart , you can't see throught my chest.
Can somebody tell this girl, why you're not happy?
Just think about It. Is just so unthinkable.
But I don't understand by myself
My question is why you're not happy?

Can somebody answer my question why you're not happy right now?