I became interested in the theory of codependency when I was involved in the running of a Public House in London. I was aware that it didn't matter how debauched someone was, there was always somebody in the background to pick up the pieces; and by doing so, to further the behavior of the miscreant.
Pondering this I became aware of how such a relationship might be affecting my own life: the many ways that one might be 'co-dependent' - on alcohol, friendship, family relationships, previous identities and to the subconscious itself, not only from the alter ego played out through another person. A person who will be always forgiven, as it is the role of the co-dependant to nurture this part of themselves.
Can one be co-dependent on one part of one's own mind? One part of the brain codependent on the other part of the brain - codependent within oneself as it were? Co-dependence is a state of living through someone else, an introvert living through the extrovert, the Saint living through the Sinner so a co-dependence on oneself must be the true passion of St. Augustine; an orgy of recrimination, like a delightfully remorseful hangover!