What defines someone as heterosexual?

Heterosexuality is defined by the attraction to individuals of the opposite sex. This means that a person who is heterosexual typically experiences romantic or sexual attraction to members of the gender that is different from their own. This definition is grounded in the traditional understanding of sexual orientation, where heteronormative relationships are those involving one male and one female partner. This distinction is important in discussions of sexual orientation as it helps clarify the diverse spectrum of human attraction and relationships. Understanding this concept is crucial in recognizing and respecting the different identities and orientations that exist in society today.