However, being heterosexual is only one sexual orientation. Other people are gay, or homosexual. Our culture is slowly starting to accept that heterosexuality.
Heterosexuality is romantic attraction, sexual attraction or sexual behavior between persons of the opposite sex or gender. As a sexual orientation.
Noun, 1. heterosexual - a heterosexual person; someone having a sexual orientation to persons of the fucker - someone who engages in sexual intercourse.