The book that you referenced in your original post along with the highlighted statement , certainly indicates pre-marital sex which according to The Bible is sexual immorality and forbidden by God. It is aggregious to our Creator who created sex to be between one man and one woman IN marriage...that in 1 Cor. 6 Gods Word says if anyone makes a lifestyle out of doing it, then that the Person is exempt from heaven. In 1 Cor. 5 , Christians are commanded to not to befriend people who profess to be Christian yet who are caught up in sexual immorality. I took the liberty of examining the book here ,
Modern Dating: A Field Guide: Chiara Atik: 9780373892778: Amazon.com: Books, and it is written by a Secular Author whereby she sees premarital sex as totally permissible .
As Christians, we should refrain from discussions of such books because they clearly go against The Bible and how God wants us to live , particularly in a Dating situation. So, i guess Im wondering why you decided to make such an Original Post as this being a professed Christian (?) Why should we discuss secular sexual standards under the pretense that they are acceptable ? This seems like an oxymoron for a Christian to do. It seems that we should take such a secular concept as the Author states, and compare it to The Bible to expose the perpetrated lie that it is common for the man to be the sexual aggressor in a dating relationship when it is decisively immoral for either Party to be such according to the Bible . Perhaps i should have asked you previously what your view on premarital sex during dating is, as a professed Christian man ; please expound on that if you desire to.
The term 'Sexual Immorality, is a biblical phrase that is used in the Bible and is not a recent inventive phrase ; Sexual Immorality is an umbrella term which entails a plethera of wrongful sexual proclivities including : Sex before marriage, sex during marriage but with someone who is not the persons spouse (adultery) , incest, beastiality, rape, etc...
While the term 'Fornication' was much more popular circa 1960 and prior, its successor term is now PreMarital Sex or Casual Sex or Hookup Sex . The terminology changes according to the Culture at the time, but Gods command to refrain from acts of Sexual Immorality has never changed and neither will its consequences both in this life, and most certainly for eternity.
Reading your original post, prompted me to submit my treatise on the 13 points showing why/how Sexual Immorality is destructive to the individual and societies ., because such secular Books all fail in addressing the real outcomes of this popular american pastime of sexual hedonism . Its sort of like the Big white Elephant in the room which no one wants to admit and address -- but thankfully the Bible does and Christians should expose the lies surrounding the topic when opportunity permits .
In conclusion, professed Christians need to settle the matter of whether they are going to get their truth from whatever the Culture comes up with on sex (a permissible lifestyle of illicit pleasure seeking) , or, to get their truth from Gods Word, his character/nature/and person (for correct living based on loving moral boundaries set by our caring Creator) . Let each choose wisely .
Regards.