Came across a thoughtful article in the September-October 2010 issue of the Japan Medical Association Journal.
JMAJ 53(5): 285-289, 2010
It is very easy for us to question the morality of youths these days, especially in light of the recent case of a 12-year-old suspected of having 15 sex partners.
Perhaps looking at it from the medical or health angle could come in useful.
A quote from the article
Although the promotion of reproductive health is not intended to endorse selﬁsh sexual activities, it is important to maintain sexual health without intruding on sexual morality.