Not again

You can't break my heart again,
I won't let you do this to me.
You tore it apart the first time,
and you left me alone to bleed.

I became completely numb,
from all the blood I lost.
But I am still fighting,
because like has a cost.

Sometimes I feel you don't care,
as you say you did.
And all the pain and fear,
behind my smile they hid.

One of my best friends,
she stabbed me in the back.
She has no idea how I feel,
and happiness is what I lack.

You hurt me times before,
but this is the worst.
You knew how I loved you,
and you were the first.