I've received hundreds of PR pitches for books, DVDs, sex toys and sexperts that all allegedly offer the "secrets" to improving a couples' sex life. The sheer volume of this content suggests two things: 1) No matter how fiery a relationship is in the beginning, it's natural for a couple's sex life to suffer under the strain of time and monotony. 2) There's no single "secret" to maintaining a satisfying relationship. In fact, the closest I've found to a universal truth for reviving a fading relationship is that couples must make a conscious effort to find what works.