Adam Ha-Rishon's Joy

Question: We recite in the Sheva Berachot: "Let the loving couple be very happy, just as You made Your creation happy in the Garden of Eden." Where is it written in the Torah that Adam Ha-Rishon was happy?
Answer: They explain in Yeshivot that there is no need for a verse, since it is logical. Why do I need a verse? It is a logical deduction! There was only one woman in the world, so there was no possibility of comparing her to another. Adam Ha-Rishon was therefore extremely happy. And the same was true for Chavah. From the moment that a man is married, he should not look at another woman, think about another woman, compare his spouse to another woman. He will then be joyous with his wife.