The term heterosexual or heterosexuality is usually applied to humans, but heterosexual behavior is observed in all mammals and in other animals.
Then come together again so that Satan will not tempt you because of your lack of self-control. (NIV) For the most part, religious traditions in the world reserve marriage to heterosexual unions, but there are exceptions including certain Buddhist and Hindu traditions, Unitarian Universalist, Metropolitan Community Church and some Anglican dioceses and some Quaker, United Church of Canada and Reform and Conservative Jewish congregations.
Almost all religions believe that lawful sex between a man and a woman is allowed, but there are a few that believe that it is a sin, such as The Shakers, The Harmony Society, and The Ephrata Cloister.
The husband should fulfill his marital duty to his wife, and likewise the wife to her husband.
The wife's body does not belong to her alone but also to her husband.
Some religions require celibacy for certain roles, such as Catholic priests; however, the Catholic Church also views heterosexual marriage as sacred and necessary.
The demographics of sexual orientation are difficult to establish due to a lack of reliable data.
Heterosexuality is romantic attraction, sexual attraction or sexual behavior between persons of the opposite sex or gender.
As a sexual orientation, heterosexuality is "an enduring pattern of emotional, romantic, and/or sexual attractions" to persons of the opposite sex; it "also refers to a person's sense of identity based on those attractions, related behaviors, and membership in a community of others who share those attractions." Someone who is heterosexual is commonly referred to as straight.
These religions tend to view all sexual relations as sinful, and promote celibacy.