Ephesians 5:28

As their own bodies - For the woman is, properly speaking, a part of the man; for God made man male and female, and the woman was taken out of his side; therefore is she flesh of his flesh, and bone of his bone; and therefore, he that loveth his wife loveth himself, for they two are one flesh. The apostle, in all these verses, refers to the creation and original state of the first human pair.