I have cried so many tears
Now, I am dry,
my pain has built up so deep within me,
Now, I am silenced,
When I open my heart just a little bit,
I am betrayed again,
leaving yet another cut in my bleeding heart,
I get so used to the pain,
I block memories out,
So I can get on with life in this cruel world,
so when I cry next they will be tears of blood,
because I have no tears left to cry.

Mahfooz Ali

http://www.poemhunter.com/poem/dry-tears-3/