@SheriGR I may have to add the trait that lets me see their traits, because the option for "get to know" only appears once and then the potentials leave before that interaction comes back. Apparently my sim is terrible at getting to know them. I will see if I can find them off lot, though. I found one I knew was "good" and moved them in, and he's been good to the cat. It was just odd that the first three (one that was a "good friend" of my sim and always kind before asking to be a roommate) were mean so often.