Have been studying biblical sexuality for the Family Matters class on Sunday.
One of the interesting contrasts is the incredible amount of sexual freedom in marriage (read Song of Solomon) - and the total lack of sexual freedom outside of marriage.
God is very clear that He set up sexuality for both procreation and recreation - His descriptions in the Song are quite graphic, even provocative - but when we take sex outside of marriage, we offend Him, hurt others and eventually destroy ourselves.
Much like life! Our freedom operates best within obedience (Galatians 5:13), an interesting paradox.