clipped from: online.wsj.com   
The limits you place on your teenager's dating may say more about your own love life than your teen's needs

parents' satisfaction with their own life roles shapes the kind of rules they set

Parents who are involved in stable romantic relationships with spouses or partners tend more than other parents to set rules limiting teen dating behavior, such as curfews, minimum ages for dating, limits on places teens can go and explicit rules against sexual activity

Ironically, in what other researchers have called the "Romeo and Juliet" effect, such rules may tend to drive teenage lovers closer

Parents who are unhappy, dissatisfied or insecure in love, however, go beyond limits and try to dictate or control how their teens treat their dates

A better way

setting "supervisory" rules, or keeping up a free flow of communication without intruding too much. This means asking teens to disclose plans, check in by phone and inform parents when plans change

drawing a line between supervision and meddling