FIRST, SECOND (THIRD...BODY)

1) First, here's a poem by Robert Bly -

A Third Body

A man and a woman sit near each
other, and they bo not long
at this moment to be older, or younger,
nor born
in any other nation, or time, or place.
They are content to be where they are,
talking or not-talking.
Their breaths together feed
someone whom we do not know.
The man sees the way his fingers move;
he sees her hands close around a
book she hands to him.
They obey a third body that
they share in common.
They have made a promise to
love that body.
Age may come, parting may come,
death will come.
A man and a woman sit near
each other;
as they breathe they feed someone
we do not know,
someone we know of, whom
we have never seen.

2) Second, here's the question: what do you think is that third body?