Emotional unavailability in a spouse is not a personality trait, a different communication style, or evidence that they don’t love you. It is an attachment adaptation: a psychological survival strategy formed long before you met, which made complete sense in the environment that produced it and that is quietly destroying the marriage it was never designed for. The mistake that costs most couples the marriage is misreading the wound as a flaw: either blaming the unavailable spouse for choosing distance, or blaming themselves for needing connection. Neither is accurate. Both are expensive. This article is primarily for the partner who has been pursuing, adapting, and slowly going quiet, with a direct section for the spouse who already knows, on some level, that something in them is sealed.