Oh, believe me, they are having sex and a lot more often than you could imagine.
I take my daughter to school everyday. We have time to talk. Sometimes it's about nothing, sometimes its about something. We've had this convo many many times before. Sometimes, I have to admit, it's mostly ME telling her all about guys and their train of thought.....

, but sometimes she tells me the "gossip" side of her world. Who is having sex with who. Who is so and so's BF....etc. This is where my jaw has damn near hit the floor several times when she tells me just WHO is having sex and WHO isn't. Some of these girls come over to our house. I see them all the time. Yet it's hard to fathom that THEY are indeed having sex.
So believe me, sometimes you wouldn't believe just who is having sex and how young they are. Remember that our society uses an ever broadening scale for everything. Back when our parents were young, cell phones didn't exist. Back when we were young, cell phones cost over $1000 and only drug dealers and the wealthy had them. Now, cell phones are given away FREE and even 10 yr olds have them. This is only in the span of 20 yrs or so. Just like the cell phones, sex has moved from being a college thing to a high school thing to now even Middle schools. It's crazy, but it's the times.