Recently, there’s been more attention to people, generally those getting a little long in the tooth, who are choosing to have relationships with others but not marry or move in together (see this article, for example: https://www.nytimes.com/2021/07/16/well/family/older-singles-living-apart-LAT.html ) Beyond the practical reasons why someone might choose to “live alone together,” LAT, as it’s called, makes sense from a psychological perspective. During the course of our lives, we create homes that send messages to the world (and ourselves) about what’s important…