Adam is very happy. His heart is jubilant. You can also tell from the way he responds. He uses poetic language. You could say that Adam is singing a song of wonder and amazement here. This woman is the fulfillment of his desire. She is different from the animals. She is also different from him and yet he sees immediately that in her being different, in her distinction from him, she is a human being. She fits him completely. She belongs to him and he to her. She is bone of his bones and flesh of his flesh. The expression my (or your) bone and flesh
is found in four other places in the Old Testament—Genesis 29:14; Judges 9:2; 2 Samuel 5:1; 2 Samuel 19:13.
23 Then the man said, “This at last is bone of my bones and flesh of my flesh; she shall be called Woman, because she was taken out of Man.”