This is just the last stanza of John Donne's good-morrow, which bewitched me two years ago when I first had the privilege of hearing it.
My face in thine eye, thine in mine appeares,
And true plaine hearts doe in the faces rest,
Where can we finde two better hemispheares
Without sharpe North, without declining West?
What ever dyes, was not mixed equally;
If our two loves be one, or, thou and I
Love so alike, that none doe slacken, none can die.