When we're incomplete, we're always searching for somebody to complete us. When, after a few years or a few months of a relationship, we find that we're still unfulfilled, we blame our partners and take up with somebody more promising. This can go on and on--series polygamy--until we admit that while a partner can add sweet dimensions to our lives, we, each of us, are responsible for our own fulfillment. Nobody else can provide it for us, and to believe otherwise is to delude ourselves dangerously and to program for eventual failure every relationship we enter.