Not really happy (Its a lie)

I hate these other people
The ones who love their lives
Nobody can even tell
of the pain I feel inside.
My heart is being broken
Its coming out with all my tears
Because of all the pain I've hidden
Over 13 stretched out years
The numbness in me is growing
Because my heart's been ripped
I'm losing touch of reality
It's slipping out of grip
Outside I look so happy
Because I was to please you
But nobody really knows
That none of my happiness is true.