Solitude?

A mourning bell,  a sorrowful dirge.
An ode to a fallen one,  one missing amongst the dunes.
Lost within his ever shrinking mind, condemned to his solitude amidst many.
A dying life,  a living death.
He dwells between them,  cursed to be seen, but never be understood.
His bleeding heart an open target,  a broken smile believed by many.
But still he lives on,  despite his lack of desire to do so......