According to the Bible, the 10 commandments came after Adam and Eve, though nonetheless B 16 makes a most serious and valid point - just think about the story of Arthur and Guinevere
27: So God created man in his own image, in the image of God created he him; male and female created he them.
28: And God blessed them, and God said unto them, Be fruitful, and multiply, and replenish the earth, and subdue it: and have dominion over the fish of the sea, and over the fowl of the air, and over every living thing that moveth upon the earth.
18: And the LORD God said, It is not good that the man should be alone; I will make him an help meet for him.
19: And out of the ground the LORD God formed every beast of the field, and every fowl of the air; and brought them unto Adam to see what he would call them: and whatsoever Adam called every living creature, that was the name thereof.
20: And Adam gave names to all cattle, and to the fowl of the air, and to every beast of the field; but for Adam there was not found an help meet for him.
21: And the LORD God caused a deep sleep to fall upon Adam and he slept: and he took one of his ribs, and closed up the flesh instead thereof;
22: And the rib, which the LORD God had taken from man, made he a woman, and brought her unto the man.
23: And Adam said, This is now bone of my bones, and flesh of my flesh: she shall be called Woman, because she was taken out of Man.
24: Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
25: And they were both naked, the man and his wife, and were not ashamed.
From the blog "Good Jesuit, Bad Jesuit"
THE commandments are God’s Law. The observance of God’s Law means man’s happiness here and hereafter. Most people think of the commandments in terms of hereafter. The fact is they are the only means of happiness here. God made man to be happy and showed him how to be happy by giving him the commandments.
When the world was made up of only two people, it was a happy world.
But they spoiled it.
They broke God’s rule of happiness, His commandments. It has been an unhappy world ever since. For men have followed the folly of the first man and woman and have tried to make a happy world by ignoring God’s Law. The result has been failure. God’s Law is a plan for human living, a way for human happiness. So God’s Law is worth knowing and worth keeping. The commandments were first given to Moses for the Jewish People. In their centuries-old history, they were happy when they kept them, unhappy when they violated them. When our blessed Lord came to Earth He proclaimed the commandments and made their meaning clear. His Church, which is His Living Voice and His Living Self, continues to proclaim them and explain them. There are ten commandments. Their message is love of God and love of fellow man. Love means action. If you love Me, keep My commandments. (John 14:15) Love means life, true life, a share in God’s Life. If any man love Me, My Father will love him, and we will come to him, and dwell with him. (John 14:23) We only really live when God lives in us. St. Paul expressed it: “I no longer live alone; God lives in me.” (See Galatians 2:20) Our Savior made it clear that we cannot live alone. Life without love is death. And there is no true love without the love of God as beginning, middle and end. Link (here) to read the full article on the Ten Commandments by Fr. Gerald C. Treacy, S.J.