New fraternities and sororities are popping up around the country, but their popularity isn't about partying. It's about piety. There are at least 210 Christian fraternities and sororities around the country now.

In our interview with Donna Freitas, Sex, lies, and hook-up culture, Freitas joked with the editors that though it would be an interesting project, she doesn't know the history of hook-up culture. Well, here are some insights into college dating in the 1950s.