This article presents a new paradigm for understanding the complexity of human sexual, affectional, and erotic attractions--commonly known as sexual orientation. This new paradigm recognizes that there is great diversity among sexual orientations, erotic and emotional attractions, behaviors, and identities and that there are complex interrelations among these dimensions. Sexual orientation is determined by multiple influences, including a wide range of sociocultural factors. The development of sexual orientation is arrived at through multiple pathways. Individuals with the same sexual orientation may have little else in common. Thus, a model of sexual orientation is presented that is based on multiplicity, not sameness, and that examines the overlapping identities and statuses of culture, gender, age, race, ethnicity, class, disability, and sexuality.