Why do you no longer see Christian couples with chaperones anymore?

People tend to change with the times & consider things of the past is just that, things of the past. Couples & parents put trust in the couple that are in love, but the bible tells us that the 'heart is treacherous & who can know it' ? Jer 17:9 There are still people who consider this form of chasity a very good gift in making sure things don't get to a point where couples don't break the morality code before marriage. A look may turn into a touch, a touch may turn into kiss, a kiss may turn into a situation that the heart may overlook due to the pion that has occured & before that couple know it, all chasity is lost. I am not one of Jehovahs' witnesses but they use this method of safeguarding couples contemplating marriage still. They believe that the bible is never out dated & it's council is just as important in today's time & society as it was in the days of the the scriptures while being compiled.