Homosexuals are those who consider themselves attracted to members of their own gender most often, rather than the opposite gender, in contrast to
heterosexuals and
bisexuals.
Amazingly enough, homosexuals do sometimes reproduce. Some of them struggle through marriages and have children, including having sexual intercourse with their spouse (or SO), all the while trying to deny their actual desires.
Also, as homosexuals are becoming more acceptable to mainstream society, some homosexual couples are having children, by sperm donation or adoption or from previous marriages.