A long article, but certainly worth reading. From The New Yorker, by Margaret Talbot.
Like other American teens, young evangelicals live in a world of Internet porn, celebrity sex scandals, and raunchy reality TV, and they have the same hormonal urges that their peers have. Yet they come from families and communities in which sexual life is supposed to be forestalled until the first night of a transcendent honeymoon. Regnerus writes, “In such an atmosphere, attitudes about sex may formally remain unchanged (and restrictive) while sexual activity becomes increasingly common. This clash of cultures and norms is felt most poignantly in the so-called Bible Belt.” Symbolic commitment to the institution of marriage remains strong there, and politically motivating—hence the drive to outlaw gay marriage—but the actual practice of it is scattershot.