Is your secret habit causing your marriage to slip through your fingers?

-By Em & Lo
-Photograph by Massimo Gammacurta

Colin and Mia had been together two years when they hit their first dry spell. "We hadn't had sex in a few weeks, and one night before bed she asked me how I was dealing with it," says Colin (not his real name), a 38-year-old vice president at a Web start-up in Boston. "I told her I was masturbating," he says. "She asked me where and how." So Colin took a deep breath and told her: at the office, once a week or so, to Internet porn.