After my scientist sim made a clone of herself, her and her wife are listed as sisters and can no longer have romantic interactions in the game. Only way to fix was to download a previous instance of...
Ideas
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Partnered Sims turn into siblings | EA Forums - 4943482
it's interesting that it happened for you after a specific interaction. Would be good if you could post that info int he existing thread (or even in the linked AHQ thread)
Thank you.