Proverbs 6:23-29 (ESV)
For the commandment is a lamp and the teaching a light, and the reproofs of discipline are the way of life, to preserve you from the evil woman, from the smooth tongue of the adulteress. Do not desire her beauty in your heart, and do not let her capture you with her eyelashes; for the price of a prostitute is only a loaf of bread, but a married womanhunts down a precious life. Can a man carry fire next to his chest and his clothes not be burned? Or can one walk on hot coals and his feet not be scorched? So is he who goes in to his neighbor’s wife; none who touches her will go unpunished.