Originally Posted by Dbat
She totally didn't believe me and said why and I had to say that I didn't really understand it myself, except that possibly there was a risk that the girl might get pregnant which could be a huge huge problem and mess up her future. So of course she said, well if they used birth control it wouldn't be a problem at all.

While this is an overrated risk in general when talking to teenagers, it's worth pointing out here that no form of birth control is 100% effective.