As some of you may know, myself and my first sexual partner who I had dated for four years previously both practiced teen abstinence, so I can't exactly provide you with a similar story of teen sexual tension and the like in those regards.
We were mainly worried about infections and teen pregnancy if the condom borke or was ineffectual. Both can cause severe medical problems, especially if the woman's hips are not totally developed if the latter occurs. We were not ready to be parents at any rate.
Unfortunately, shortly after we began sexual relations, she was diagnosed with cancer and died a year later.
I would recommend going over with him such things as abstinence, the only 100% way of knowing that you won't get a disease from intercourse, obviously. Although few decided to take this sort of thing up, and to be quitre frank, many of my friends at the time felt the same way, it is always good they know that they do not have to go into sexual relations with any person until he feels he is ready.
I remember my good ol' school days when people would compare when they lost their virginity, so I can honestly be a source for anyone's son or daughter by saying that they are not doing themselves any favours, and it will die off eventually as it will no longer be cool.
Growing up in a house with parents who believed totally in the truth, my parents tried to explain everything they thought I was able to comprehend at the time. As I got questions, I grew up in an enviroment where my parents could be the answers, rather than the half truths my friends would tell me later on. Also, safe enviroments, such as Denethorn suggested, would probably be a good idea, although as you can see, I was living on my own when I lost my virginity.
A mother is a good place for any curious kid to ask questions. They are pretty much the role model for quite a while. Your kid is probably entering the stage where he is having strange ideas and thoughts (not sexual, just not what he used to dream about) and will eventually notice that some changes have begun. No doubt he will be very shy of such things at first, but if he is sheepish in the morning and you notice obvious hair growth on his arms, it may be, in my view, time for the 'Tent Discussion'.
That's pretty much all I can think of now. Good luck with the talks.
