The author focuses on bisexuality in a continued analysis of Freud's radical sexual theory. A close reading of texts from Freud's work, in particular “The Ego and the Id,” demonstrates how Freud puts forward a bisexuality thesis in parallel and as an alternative to his thesis of the Oedipus complex. This bisexuality thesis is premised on the mechanism of object cathexis and identification by which the ego and superego are formed. The textual excavation is extended back to earlier material by Freud and other authors (Trigant Burrow, Isidor Sadger) to reveal the foundational bedrock of the bisexuality thesis in primary identification. This line of investigation boldly confirms not only Freud's view of the fundamental centrality of bisexuality to human sexuality but also its main consequence, which Freud himself implicitly recognizes, namely, the negation of the Oedipus complex. This argument has ramifications for the theory and clinical practice of psychoanalysis.