Dictionary and encyclopedias instead? Ok.
"Sexual intercourse between a man and a woman who are not married to each other." (West's Encyclopedia of American Law )
"1. Noun - Unlawful sexual intercourse on the part of an unmarried person; the act of such...
Do you? You’re attempting to impede the happiness of people’s relationships in a way by classifying it as sinful. According to universal codes of morality impeding genuine, loving relationships is wrong. For your religious morality: homosexuality is wrong. And your entire argument comes down to...