Within the expansive world of The Elder Scrolls V: Skyrim, dissolution of marriage is, notably, impossible through in-game mechanics. Once the Dragonborn enters a marriage contract, typically performed via the Amulet of Mara questline, that bond is permanent. There is no vanilla, or unmodded, method to sever the marital ties.
The lack of a divorce mechanic stems from the game’s design choices and development priorities. While marital relationships offer gameplay advantages, such as shared living spaces and income, the focus remained on broader exploration, combat, and narrative arcs. Introducing a full divorce system, with associated consequences and legal processes, may have been considered beyond the project’s scope.