Cube heart Aphrodite to Pluto. Cube of love. Venus linked with God of the Underworld. Heart in addition to Hades to form a cube. Aphrodite intersected by God of the Underworld. The connection of plus Venus, minus Hades. The square as a symbol of passionate love, associated with Venus and God of the Underworld. Two forces merged in a box: passion and Venus minus Hades.