In the Garden of Eden, Almighty God brought the bride to the groom and there were formal words spoken between God and the groom before the couple had sexual relations. T here is a story in Genesis 34 that draws clear boundaries. Now Dinah, the daughter Leah had borne to Jacob, went out to visit the women of the land. When Shechem son of Hamor the Hivite, the ruler of that area, saw her, he took her and violated her. His heart was drawn to Dinah daughter of Jacob, and he loved the girl and spoke tenderly to her.
Several things are apparent.
Shechem knew that having a loving sexual relationship did not make her his wife. Sex without marriage is a violation of the woman's rights. Her rights are protected only in marriage. His daughter was not simply having an affair, she had been defiled. The language of Dinah's brothers was even stronger in verse 31.