It's not a poem, but it's a beautiful song.
I will follow you into the dark by Death Cab for Cutie
Love of mine, someday you will die,
But i'll be close behind; i'll follow you into the dark.
No blinding lights or tunnels to gates of white,
just our hands clasped so tight. Waiting for the hint
of a spark. If heaven and hell decide that they both are
satisfied, illuminate the NO's on their vacancy signs,
if there's no one beside you when your soul embarks,
then i'll follow you into the dark.