Sex talk with children begins when they ask where babies come from. Or why women are built different from men.

As a parent I brought up certain things about sex when I wanted to teach my kids to be safe. When my son wanted to start having sex (in 10th grade!) he asked me to buy him condoms. I told him 'if you're man enough to have sex, buy your own condoms'. I told him there are consequences to his having sex and possibly getting the girl pregnant and STDs.

Now as a college student, he told me such a crazy sexual thing that his bisexual girlfriend wanted to do to him and he didn't want to do. I told him not to let her bully him and stick to what he believes in.

So, you can't stop them from having sex. I'm glad my boys feel comfortable enough with me to discuss their sex concerns. Open dialogue is good parenting for the purposes of keeping them happy and safe.