Refers to a person’s deep-seated feeling of sexual and romantic attraction. These attractions may be mostly towards people of the same gender (lesbian, gay), another gender (heterosexual), men and women (bisexual), or people of all genders (pansexual). Many people become aware of these feelings during adolescence or even earlier, while some do not realise or acknowledge their attractions (especially same-sex attractions) until much later in life.
Many people experience sexual orientation fluidly, and feel attraction or degrees of attraction to different genders at different points in their lives. Sexual orientation is defined by feelings of attraction rather than behaviour.