The relationship may need a new agreement because the old one can no longer carry the same confidence.

Most relationships run on terms nobody wrote down, agreed to quietly and then left in place. When circumstances shift, or something strains the trust between you, those terms keep being invoked while quietly failing to hold. The difficulty is rarely bad faith; it is an old arrangement being asked to carry a weight it was never built for.

If something keeps going wrong in the same place, try naming the unspoken agreement aloud instead of enforcing it again. Ask what would need to be true now for both of you to rely on it. Rewriting is often kinder, and more durable, than insisting.