When the man looks at his wife, he is full of admiration. What a wonderful gift he has received in her from the Lord. Enjoying each other in marriage is allowed. God wants us to enjoy what he has given us in each other as husband and wife—also physically.
The Lord has given many things for man to enjoy, but his wife rises above them all. Of all he has received in creation, she is the most wonderful. When he looks at his wife like this and sings her praises, the desire to touch her wells up in him.
6 How beautiful and pleasant you are, O loved one, with all your delights!