Armor

From the lack of sun--
I'm always covered in armor
No matter how far I run.
The knifes and needles don't stab me now;
This armor I have is strong.
Even with the ones I love
Exposing myself is wrong.
Others have shed their metal;
Their feelings shine through like the stars.
But under my armor isn't a pretty thing;
I have fought too many wars.
Only one has seen my heart;
Pumping red with blood.
But he has shattered all my light
And caused my eyes to flood.
Now I am permanently closed;
This armor has welded to my skin.
No one can hurt me now;
No one will ever get in.