Ceasefires arrive long before treaties. The first sign isn't resolution, it's an afternoon where the argument in your head simply doesn't start, and you only notice at six that it has been quiet all day.
Those afternoons come back. They lengthen. That tends to be how the internal business goes — not with a decision, but with a slow reduction in how often the same fight gets picked.
None of which requires you to win the argument today. It only requires you not to treat a quiet hour as suspicious when one turns up.