Sexual orientation is distinct from other components of sex and gender, including biological sex (the anatomical, physiological, and genetic characteristics associated with being male or female), gender identity (the psychological sense of being male or female),* and social gender role (the cultural norms that define feminine and masculine behavior).
Sexual orientation is commonly discussed as if it were solely a characteristic of an individual, like biological sex, gender identity, or age. This perspective is incomplete because sexual orientation is defined in terms of relationships with others. People express their sexual orientation through behaviors with others, including such simple actions as holding hands or kissing. Thus, sexual orientation is closely tied to the intimate personal relationships that meet deeply felt needs for love, attachment, and intimacy. In addition to sexual behaviors, these bonds include nonsexual physical affection between partners, shared goals and values, mutual support, and ongoing commitment. Therefore, sexual orientation is not merely a personal characteristic within an individual. Rather, one’s sexual orientation defines the group of people in which one is likely to find the satisfying and fulfilling romantic relationships that are an essential component of personal identity for many people.