Lovestruck issues on one save only

My main save, (that I am on gen 12 of!!!!) Is having issues with the new lovestruck interactions. My sims can't woohoo on the blanket, or share a sweetheart box. They get hearts above their heads when I do these interactions but there no animation of it happening and it isn't registering as completed aspirations either. At first I assumed this was a problem with mods, but removing all mods didn't change it. I then checked if the problem was in all saves, and it isn't! It's just this particular save! Is there anything I can do to fix this? Is this a known issue? Thanks in advance!