Jealousy occupies a contested and richly stratified position within the depth-psychology corpus. The literature divides broadly between those who pathologize the emotion — locating its roots in insecurity, low self-esteem, or psychic defect — and those who insist upon its adaptive, even necessary, function. Melanie Klein situates jealousy developmentally within the Oedipal situation, arguing that it serves as a vehicle for working through primary envy by redistributing hostile affects toward rivals rather than the primal object, thereby introducing a structural element of relief into early object relations. Thomas Moore, drawing on archetypal psychology and the mythological figures of Hera and Aphrodite, treats jealousy as a soul-event demanding integration rather than elimination — a collision between archetypal polarities that, when refused, generates moralism, paranoia, and psychic rigidity. The evolutionary framework advanced by Lench and Buss reframes jealousy as a functional adaptation designed to protect valued reproductive and social bonds, predicting sex-differentiated triggers and cross-cultural universality. Anne Carson, working from philological and literary evidence, traces jealousy etymologically to Greek zelos — fervent pursuit — and renders it as a choreography of displacement, the instability of the emotional triangle made visible. David Konstan’s classical scholarship complicates universalist claims by demonstrating that the Greek zelotupia conflates what modernity separates into jealousy and envy. Across these positions, the triangular structure, the proximity to envy, and the question of normativity versus pathology remain the central tensions.