Sex is a normal part of life, especially among the younger members of society

Though I'm not sure that its as 'normal a part of life' as some would have us believe.

However we should empower our young people to say no to sexual advances until they are mature enough to handle them sensibly.

I think that this is the important point; and teaching abstention not only empowers young people (especially, but not exclusively, girls) to say no, it points out to the lads that there is another way.  I took precious little interest in this whole area until I was into my 20s - I was so busy with sport and politics that they got in my way rather, and was also moving around the country (even the world) a lot at this early stage of my adult life.