Biologically, our bodies were made to have intimate and sexual relations with the opposite sex.Sure, times have changed and people have changed with them.Jerry Jenkins wrote a great book on this topic, Hedges: Loving Your Marriage Enough to Protect It.
Men and women were created for intimacy with one another. If a man and woman spend time together in close proximity and share their inner-most feelings, things will happen.
Even couples with the best-intentions have faltered when boundaries aren't in place. This may sound like "old school" or something our great grandfathers did. The fact of the matter is that when it comes to love and romance nothing really has changed from one generation to the next.
As parents, we need to re-position dating back on a pathway that anchors our teens and adult children to God's ways.
Just as in marriage, dating or courtship needs to be about God's glory and building each other up in Christ.
We need to embrace the idea that dating and/or courtship is a prelude to marriage.