Antony and Cleopatra Pelleas and Melisande Romeo and Juliet Tristan and Isolde ally alter ego analogon analogue associate bill-and-cooers brother close copy close match cognate companion complement congenator congener coordinate correlate correlative correspondent counterpart equivalent fellow image kindred spirit like likeness lovebirds mate near duplicate obverse parallel pendant picture reciprocal second self similitude simulacrum sister soul mates such suchlike tally the like of the likes of turtledoves twin