this reminded me of a couple things I heard about sex and dating from elders growing up.
1. Since after sex, a man and women were considered unclean, until the next day or something, can't remember the specifics, jehovah doesn't want us having sex that often. This was from a never married elder in his 40's at the time.
2. "Don't date a girl until you're sure you want to marry her." Even at the time it seemed like really really bad advice.