Sounds a bit like this:
To be sure, these were all former partners that came back, not just random Sims ?
From continuing to try and fix this issue now what I can see is it seems to only be the "ask to just be friends" button that is broken and causing these errors. When you just choose "break up" it does seem to stick and they stay broken up. The problem with that is it makes them hate each other, have negative emotions towards each other, and then has the title broken up under their labels. I don't like that. "Ask to be friends" didn't have any of those consequences when it was working. But I guess it will do for now
The Sims Team
