there are six couples in a two-person relationship: a to b, a to a’, b to b’, a to b’, a’ to b, a’ to b’.
Stein expounds Jung’s structural argument that any dyadic encounter is constituted by six active relational vectors among conscious and unconscious players, radically multiplying the complexity of what appears to be a simple two-person bond.
, Transformation Emergence of the Self (Volume 7) (Carolyn, 1998thesis