You shall not commit adultery.

You have heard that it was said, "You shall not commit adultery." But I say to you that every one who looks at a woman lustfully has already committed adultery with her in his heart.

2331 "God is love and in himself he lives a mystery of personal loving communion. Creating the human race in his own image . . .. God inscribed in the humanity of man and woman the vocation, and thus the capacity and responsibility, of love and communion."

"God created man in his own image . . . male and female he created them"; He blessed them and said, "Be fruitful and multiply"; "When God created man, he made him in the likeness of God. Male and female he created them, and he blessed them and named them Man when they were created."