Those of us who read the book of Proverbs a chapter a day might recall that chapter 4 regards wisdom as being so vitally important that verse 4 says:
Let your heart hold fast my words;
keep my commandments, and live.
Wisdom is exalted through the end of the chapter with statements like:
Keep hold of instruction; do not let go;
guard her, for she is your life. (4:13)
My son, be attentive to my words;
incline your ear to my sayings. (4:20)
Do not swerve to the right or to the left;
turn your foot away from evil. (4:27)
The fifth chapter begins with another call to "PAY ATTENTION!"
My son, be attentive to my wisdom;
incline your ear to my understanding,
that you may keep discretion,
and your lips may guard knowledge. (5:1-2)
Solomon then begins a rather thorough exhortation to stay away from immoral women and to guard your heart from sexual temptation. Probably the most memorable and "straight to the point"-ish verse in the chapter is verse 15:
Drink water from your own cistern,
flowing water from your own well.
Before Solomon instructs his readers on various other situations, he gives a final promise:
He dies for lack of discipline,
and because of his great folly he is led astray. (Pr 5:23)
As if that were not enough, chapter 7 is devoted to the ways of immoral women.
Now... let's put all of this into perspective:
- Solomon was only a youth when he was anointed king of Israel and when asked by God for "anything" replied "wisdom." (1 Kings 3)
- He, for various reasons, married and entered into relationships with many women.(1 Kings 11)
- He wrote the book of Proverbs to/for his sons specifically. (Proverbs 1:8 and elsewhere.) His sons are royalty and he desires to share wisdom the Lord has allowed him to benefit from, and experience to avoid.
- Solomon was used by the Holy Spirit to pen these Scriptures, which makes it infinitely profitable for you and me. (2 Timothy 3:16-17)
I say all that to say this:
If you are in a relationship that needs to be secret... you are in the wrong relationship.