Monosexuality
Monosexuality is romantic or sexual attraction to members of one sex or gender only. A monosexual person may identify as heterosexual or homosexual. In discussions of sexual orientation, the term is chiefly used in contrast to bisexuality, or pansexuality and various other gender-inclusive or gender-neutral identities. It is sometimes considered derogatory or offensive by the people to whom it is applied, particularly gay men and lesbians.