A few things to ponder on John, if your doing nowt.

Sexual Orientation is an enduring emotional, romantic, sexual or affectional attraction to another person. It is easily distinguished from other components of sexuality including biological sex, gender identity (the psychological sense of being male or female) and the social gender role (adherence to cultural norms for feminine and masculine roles)

Sexual orientation exists along a continuum that ranges from exclusive homosexuality to exclusive heterosexuality and includes various forms of bisexuality. Bisexual persons can experience sexual, emotional and affectional attraction to both their own sex and the opposite sex. Persons with a homosexual orientation are sometimes referred to as gay (both men and women) or as lesbian (women only). Very rarely refered to as "puffs" or even "poufs"

Sexual orientation is different from sexual behavior because it refers to feelings and self-concept. Persons may or may not express their sexual orientation in their behaviors.
So there.