Are you and your spouse one of those married couples “who tend to withdraw into their coupledom”? Apparently this tends to occur among the affluent.
. . . as income rises, the advantages of married over never-married individuals evaporate and even reverse. While affluent never-married people continue to multiply their interactions with friends, neighbors and family, affluent married couples don’t. This could well be why, at the highest income levels, married people are actually more likely to report depressive symptoms than their equally affluent never-married counterparts.
The advice is to nurture relationships with people outside of your marriage, including going on “double dates”.