From Genesis 1 onward, Scripture affirms repeatedly that God has made man and woman for one another and that our sexual desires rightly find fulfillment within heterosexual marriage. (See, for instance, Mark 10:2-9, 1 Thess. 4:3-8, 1 Cor. 7:1-9, Eph 5:21-33, Heb. 13:4). The Song of Solomon, however it is to be interpreted, also celebrates love and sexual desire between man and woman.

Richard B. Hays, The Moral Vision of the New Testament