Please use this thread going forward: Partnered Sims turn into siblings | EA Forums - 4943482
I hadn't played the game for a few months and then decided to load up my old family on the game, I have a little bit of CC but it only affects textures and appearance options and shouldn't be messing with relationships at all. Regardless I noticed that whether I have it activated or not, for some reason now my two sims are sisters as well as spouses. I didn't notice it at all until they had a free moment in their busy lives and I decided to have them be romantic, only to find they could only offer massage or serenade.
I spent the next hour on google trying to find a solution, and nothing worked. I read that it is caused by the cas.fulledit cheat, but I have never once used ANY cheat codes, so it couldn't be that for me. One post suggested using cheats like "relationship.add_bit" or "relationship.destroy" but neither of these had any effect whatsoever on any sim in my game no matter how many times I entered them. I just pressed enter and the text box cleared with no effect.
My theory is this: I have the get to work expack and my sim is a scientist; at one point her work goal was to clone herself, so I excitedly did so, and the clone was listed as being her sister. I don't remember if I had my sim and her wife try romance at all after the clone appeared, but I think since my sim and her clone are identical it could have confused the game somehow?
Anyway, I deleted the clone, but no effect. The damage seems permanent.
I even tried what some suggested as a last ditch effort of saving the family to the library and then loading them in so that relationships could be freely edited, but no luck there either. All relationship options were greyed out with "Cannot edit relationships on pre-existing Sims"
I really hope there is a working fix for this. Idk if people are still regularly experiencing this bug or if its just me. Any help would be appreciated.
I had this problem too: My sim is a witch, and she made a duplicate of herself, and now I can't really use romantic interactions between her and her partner. The last time I actually could use romantic interactions was before the double was created. I am not sure how to fix this, especially without mods.
I'm having this problem too currently, but my problem started when I used MCCC to accidentally make my female vampire Sim the sister of Alexander Goth. I deleted their relationship afterwards, but it keeps putting them as brother and sister, even though they're husband and wife. And their kids keep getting changed to brother/sister/cousins. I have since deleted the relationships between my female Sim and Alexander Goth about 5 times now. I even deleted a bugged version of the female Sim and added a new version of her to the game, but she still ends up being the sister of Alexander Goth, even though she is his wife. I should also note that everyone in my household are vampires, I have never played with a spellcaster in this save, and I have not duplicated/cloned any Sims. The problem seems to exist in both the game itself and MCCC, as it started happening in my game after I accidentally made my female Sim and Alexander Goth brother and sister using MCCC. And since then, the game continuously seems to think they are brother and sister, even though they are married to one another/have children with one another.
Edit: And I only accidentally made them brother and sister using MCCC to begin with, because my female Sim would not romance Alexander Goth at all (the only option she had under romance was "Offer Massage"). I do use mods in my game, but seeing as this problem happens to people who don't even use mods, I don't think this is mod-related; I think it's a game bug and a game-breaking bug at that. EA, you need to fix this ASAP!
