Part of my reading includes reading a Proverbs a day, well on the 7th I was reading, go figure, Proverbs 7, and if you have read this chapter then you know its full of verses blasting warnings to run like your hair is on fire (or your clothes if you're bald) from the dreaded harlot, verses like:

12 She is now in the streets, now in the squares, And lurks by every corner.
21 With her many persuasions she entices him; With her [o]flattering lips she seduces him.
22 Suddenly he follows her As an ox goes to the slaughter, Or as [p]one in fetters to the discipline of a fool,
23 Until an arrow pierces through his liver; As a bird hastens to the snare, So he does not know that it will cost him his life.

For some reason this topic seems to be taboo, something people don't talk about, yet here it is eating up a whole chapter in Proverbs. My wife and I continue to be shocked of story after story of marriages ending, lives being destroyed (married or single). This stuff, what we call immorality, lust of the flesh, fleeting eyes, that we justify by saying it was just a glance or I'll close my eyes during that part of the movie, its toxic!!

Look at the man in Proverbs, it started with just walking in her general direction (v.8), for us maybe its a lingering conversation, taking a certain path at the office to walk by her, or picking a certain checkout stand. It all seems innocent, but that's not how it works. Look at how John MacArthur describes verse 10
"This is an unfair contest between the naive young man, who lacks wisdom and is void of the truth, and the evil woman, who knows her goal, but hides her true intentions"

So heed the warnings
24 Now therefore, my sons, listen to me, And pay attention to the words of my mouth.
25 Do not let your heart turn aside to her ways, Do not stray into her paths.
26 For many are the [q]victims she has cast down, And numerous are all her slain.

So what does this look like? Look at the first few verses of Proverbs 7:

1 My son, keep my words, And treasure my commandments within you. 2 Keep my commandments and live, And my teaching as the apple of your eye.
3 Bind them on your fingers; Write them on the tablet of your heart.
4 Say to wisdom, “You are my sister,” And call understanding your intimate friend; 5 That they may keep you from an [c]adulteress, From the foreigner who [d]flatters with her words.

Now its not enough or even the point to just flee lust of the flesh, we have to run to Him and repent

Acts 2
38 Peter said to them, “Repent, and each of you be baptized in the name of Jesus Christ for the forgiveness of your sins; and you will receive the gift of the Holy Spirit. 39 For the promise is for you and your children and for all who are far off, as many as the Lord our God will call to Himself.” 40 And with many other words he solemnly testified and kept on exhorting them, saying, “[a]Be saved from this perverse generation!”

Eric House