L'Amoureux
From The Fool to The Emperor, the cards illustrated an accumulation of massive, individual concepts or energies. In The Hierophant, we reached a point of ("sexual") interaction between those energies. From there down, the Tarot is a theater of play between modes of Consciousness, strengths (or weaknesses) of Will, Physical/Emotional energies, Spiritual states of being... You get the idea; you're alive...
Every bullshit, flea market psychic hopes The Lovers will turn up in a reading. The only card that is more effective in manipulation of a client is XIII, the Nameless Arcanum, often called Death. The true lessons of both cards are more similar than you may first suspect.