define edge

have you seen the edge?
the place containing an invisible line that separates me from you,
the place that determines your worth,
the place you had that the other girls just don't,
the place where you were, just one "inch" ago,
the place that borders and protects...us now,
the place where we choose to live so carelessly and free,
the place my voice went, to say how much i loved you, and run,
the place the doctors use to make the incision,
the place that it seems you've left me for, in heaven,
the place that i ended up cause i'd had enough by then,
have you seen the edge?
come closer to it.
to me.
where is the edge for you?