I never understood the concept of casual sex. How is there something casual about it? Even if your are careful, you could end up with a deadly disease or a disease that will follow your future sex life. Also, you could end up pregnant with the child of someone you know nothing about. It is such a shame when people use their bodies just for pleasure like that. Sex should be more than that... course, I'm a 27 year old virgin so maybe I'm not the best to talk...