There's a known glitch that may date back as far as 2014 or 2015 that is now being reported by Simmers across devices for Sims 4 (including Console). This glitch allows toddler, child and teen sims to have romantic feelings for their parents or extended family. While some glitches are inevitable, please prioritize fixing this immediately. It can cause great harm, especially for those with a history of familial abuse. This does not appear to be related to mods.