"If God is left out of sex, it becomes pornographic; If sex is left out of God, it becomes pious and self-righteous." -Leonard Cohen
The x-factor in both cases is desire. God/universe is life and life is desire, therefore the act of sex in its biological form is a life force that would not exist without God/universe. There is no separation between divine creation, sex, pleasure, and desire. It is this energy that has given birth to life itself.
It's the perfect cocktail, God + Sex = Desire/Life/Creativity. Salut! -tM