Since they aren't related, they are allowed to do that.
Make sure you don't have the free love NAP active if you own the eco pack.
Hi sleepyb2025
to be sure, they aren't related in the family tree at all ? They are just caretakers ? If so, they are allowed to flirt and it sounds more like an issue where the autonomous flirting as reported here: Sims excessively flirt with others | EA Forums - 12039807
There’s 12 sim kids in total
so if sim 1 and 2 have a child and sim 3 is the adoptive caretaker, sims 3 flirts with the adult sim child of 1&2. Same if sim 1&3 have a child that sim 2 is the adoptive caretaker, as soon as that child is an adult then sim 2 flirts or kisses them. And same if sim 2&3 have children, when they are adults they start flirting with their adoptive caretaker
Since they aren't related, they are allowed to do that.
Make sure you don't have the free love NAP active if you own the eco pack.
