Ladies, beware of dashing men. They could be dangerous. Young men who are good-looking and know it are more likely to engage in risky sex than guys who have a less positive body image, according to a new study from researchers at Pennsylvania State University. However, sexually active young women who are happy with their looks are less likely to undertake those same risks, which include having sex without condoms and sex with multiple partners. The study: Led by Dr. Eva S. Lefkowitz, associate professor of human development and family studies, and graduate student Meghan M. Gillen, the Penn State...