As humans, we are not meant to be isolated. We all crave deep and lasting connections with other people. But we know it’s possible to feel alone in the middle of a crowd, and it’s possible to sleep in the same bed with someone for years and still feel lonely. Many of us never expect to be lonely in marriage, hoping that our spouse will be the lifelong companion who saves us from loneliness. Over time, however, couples can gradually disconnect from one another and find themselves feeling isolated and withdrawn.