This article explains one of the objects of study of the author; the homosexual process of psychic development.
Such a process includes the double of the self, the primary and preoedipal homosexualities as well as the construction of the fantasy « the female relation with the father » in adolescence (oedipal homosexuality). A clinical example (the extreme femininity of a 15 year old adolescent) illustrates the reflection on the construction and the continuity of the homosexuel process.