Thanks all for jumping in here.
Great question! -- These are well known literary lovers who "speak to both union and separation", to cite you, similia. And they experience the sweet harmony and lonely anxiety of a loving relationship. All three couples communicate their love and passion, yet bear the soul-pain of separation. In the end, only Marius and Cosette suffer through separation to final union. I think all three couples (there are others, obviously, possibly better examples) "embody the Archetype of the Lovers" in their heart-centered oneness, in their depth of communication, in their fervent romantic-erotic love. But Love is a most mysterious Archetype. Romeo describes Love as "bright smoke, cold fire, sick health, still-waking sleep, that is not what it is." Goethe describes Love as "seeming to flee,yet returning from his flight." Hugo describes Love as a "sombre and starry transfiguration mingled with torture."
The Thoth Image of Love is both "sombre and starry" too. Divination with this Image cannot be easy if it truly pictures Love and Lovers.