Wendy Shalit reviews three new books on the campus “hookup” culture and insightfully examines the situation. She reports on new research that shows how damaging this behavior is, and finds that while it may be harder on girls, many boys don’t like it either. She also exposes the investment that older people have in continuing to call it some kind of “liberation.” And she tells of her experiences as a speaker at Swarthmore, where a “Gender F–k” bash is held every year.