"At the heart of Fairbairn's theory was a notion of endopsychic structure based directly on the vicissitudes of human object relatedness --in a way so radically different from other theories of his time that it is only now, a half-century later, that his ideas are finally having their appropriately profound influence on the general spectrum of psychoanalytic thinking"

I'd expand on this with the suggestion that the Lilith Archetype, the first wife of Adam, which constellates in the psychic structure of the coutesan (we also note the linguistic root "coeur", of the heart) is experienced as an ambivalence of self (as projected onto the idealized other) and object, that which is split off as "not-self"... it is this self/not-self tension which makes the courtesanal relation both nurturant, in that is a vital affirmation of the deep endopsychic plane in the male, and at the same time, a reflection of self versus object absence of completion. One could further posit when the male psyche, that which is "greater than ego consciousness" attains an interal, endopsychic attainment or rapprochment with the object, that the mythic plane of the courtesan becomes unfolded to him, and he cam become folded into it, or "com-plicated", among the folds...