Seven years after marriage, how lingerie can bring the couple back to their passionate romance

In the seventh year of marriage, many people discover an awkward fact: they are so familiar with each other that they no longer "see" each other. The heartbeat of a passionate romance doesn't disappear; it's diluted by familiarity—the brain automatically lowers its response to predictable stimuli. This isn't a problem in the relationship; it's a natural law of relationships.

Lingerie is useful because it is the lowest-cost "contrast signal"—it doesn't change who you are, only "who you look tonight."