I had a teen with everything turned off. I double checked. Another teen of the same sex had the unflirty trait, and angrily accused my teen of flirting with her. My teen was hurt by the false accusation or the rejection: whichever it was, neither should have been possible with the settings that I chose. I know it is just a game, but that day I was having a crap day and was playing the Sims as a way of escape, and the episode was not enjoyable. I checked the setting for a third time, and everything was turned off. She was just supposed to be a kid, not some type of predator.