In literary texts the term “sexual” is employed with a remarkable range of meanings—from the concrete descriptions of biological processes to the more nuanced, symbolic representations of human desire and social behavior. For instance, in psychoanalytic writings Freud uses “sexual” to probe aspects of the libido and patient symptomatology, describing everything from the patient’s sexual life and intercourse ([1], [2], [3]) to the underlying structures of developmental and perverse tendencies ([4], [5], [6]). At the same time, naturalists like Darwin investigate “sexual” phenomena in terms of reproductive selection and the evolution of secondary sexual characteristics ([7], [8], [9], [10]), while other writers extend its scope to include the moral and cultural dimensions of human interaction—examining everything from sexual union as portrayed in ancient texts ([11], [12], [13]) to modern reflections on sexual modesty and dignity ([14], [15]). This versatility shows how “sexual” in literature can denote both a physiological fact and a complex metaphor for emotional, societal, and symbolic life.