Somewhere along the line, you changed.
You built walls all around you
and wore armor against the world,
You guarded your heart so well you could behave as though you didn't have one at all,
Even now, it's a shabby broken thing
but you still have it.
Not a heart of stone nor of ice,
But a fragile heart of glass
Sharpened through all its edges to stop anyone from getting in,
To stop the pain from getting out,

I understand why you wear armour,
That's why I wear it too.