Proverbs 5:1-6
For the lips of a forbidden woman drip honey,
Proverbs 5:3-4
and her speech is smoother than oil,
but in the end she is bitter as wormwood,
sharp as a two-edged sword.
All of Proverbs 5 serves as a warning against the particular sin of adultery, but as Fred pointed out, the specific temptation toward adultery can be seen as a metaphor for virtually any temptation to sin. If we are not on guard, we can be so easily enticed by what presents itself as pleasantness. But we all know that the end is not so pleasant. It is death itself. Each person is tempted when he is lured and enticed by his own desire. Then desire when it has conceived gives birth to sin, and sin when it is fully grown brings forth death. (James 1:14-15)