Proverbs 5:15-21 (TPT) “My son, share your love with your wife alone. Drink from her well of pleasure and from no other. Why would you have sex with a stranger or with anyone other than her? Reserve this pleasure for you and her alone and do not share it with another. Your sex life will be blessed as you take joy and pleasure in the wife of your youth. Let her breasts be your satisfaction, and let her embrace intoxicate you at all times. Be continually delighted and ravished with her love! My son, why would you be exhilarated by an adulteress— by embracing a woman who is not yours? For God sees everything you do and his eyes are wide open as he observes every single habit you have.”
Song of Solomon 8:6(KJV) Set me as a seal upon thine heart, as a seal upon thine arm: for love is strong as death; jealousy is cruel as the grave: the coals thereof are coals of fire, which hath a most vehement flame.