The life and theory of Sandor Ferenczi provide insight into both the historic admonition and the dangers of loving feelings in the therapeutic relationship. Ferenczi believed in the creation of mutuality in all analytic dyads. His refusal to subscribe to a hierarchical structuring of the treatment relationship led to his subsequent marginalization from the traditional psychoanalytic canon for nearly a century. On close inspection, however, he was a formative figure who laid much of the groundwork for current thinking about the intersubjective and relational approaches to treatment. Much of his life and theory can be understood through the lens of his relationship with Sigmund Freud. That relationship is closely scrutinized in the following historical examination.