Postnuptial depression may not be a clinical diagnosis, but it has entered the lexicon of marriage in the past few years, and newly hitched couples will tell you it’s real. The blues typically hit early in married life, psychiatrists say, as newlyweds begin recognizing that expectations of how their partner or relationship will change post-wedding are unrealistic. Worse, once the Big Day has come and gone, couples are suddenly forced to step out of their much-cherished, and often long-lived, “bride” or “groom” spotlight and just get on with real life.