Psychoanalysis has established a sort of dynamic alternative between jealousy and homosexuality. On one side jealousy is a partial defense against homosexual tendencies; on the other, homosexuality is a defense against jealousy. However, jealousy and homosexuality may have other motivations. Thus it was possible for Lagache to observe jealousy in a manifest homosexual utilized as a defense against latent homosexuality. The latent homosexuality was motivated differently from the manifest. The paper presents an interesting case history and other theoretical developments anent the relations of jealousy and homosexuality.