Today, we live in a hook-up culture - a culture that promotes casual sex. One hundred years ago, a hook-up was not about casual sex. It was the precursor to a lifetime commitment. In 1911, my grandparents, Carl Murphy and Lula Vashti Turley "hooked up" at Howard University in Washington, D.C. - he, the German professor, and she, the German student; he, born in 1889, and she, five years earlier; he the Alpha man and she the co-founder of Delta Sigma Theta Sorority, Inc.; he, the son of the founder of the Afro-American Newspaper; and she, the D.C. school teacher. It wasn't until after she was...