Self-report surveys like the 2005 report by the National Center for Health Statistics indicate around 50% of students having had sexual intercourse by the end of high school.
What this suggests is that a lot of students do have sex, and about the same number don't.
"If a serious relationship becomes emotionally intensified by first love, then there are more specific questions parents can suggest for the young person to consider because love relationships are the most intimately complex and challenging of all.
These are questions relevant not just for late adolescents, but for couples of any age.-- The Expression question: "Do you both feel free to speak up about what matters?
To what degree is it constructed and conducted so that it works well and not badly for the young people involved?
What should they expect in a relationship, and what should they not want?
For many young people, the path to learning how to have a good relationship runs through the hard experience of having one or more bad relationships.