Proverbs 5
A warning about adultery that's honest about the appeal ("lips... drip honey") and about the end: bitterness, wasted years, and the groan at the end of life, "How I hated discipline!" But the answer isn't just "don't." It's delight in your own spouse: "rejoice in the wife of your youth... be captivated by her love forever." The Bible is pro-pleasure inside covenant.
"May your fountain be blessed, and may you rejoice in the wife of your youth:" (Proverbs 5:18)