The Sims 4 received patch 1.90.375.1020 today, which has a short set of patch notes. One of the included bug fixes is that "The 'Ask to be Girlfriend/Boyfriend' Want now targets appropriate Sims", which sounds innocuous enough. In reality, this is fixing a bug Rebecca reported on last week which was causing Sims to want to date their siblings.
The Sims 4's new patch fixes the incest
