In 1959, just three years before Helen Gurley Brown famously authored the bestselling Sex and the Single Girl, she married David Brown, years before the producer would come into his own professionally. But David was the one who famously encouraged his new wife, who was a not-so-girlish 40 at the time, to chronicle her bachelorette days in what was to become a tome for female sexual empowerment. “Having a man is 50 percent of living,” the famed relationship adviser later wrote at the magazine she shaped.