Well, cueing up "get to know" is great at the beginning, but, then when you get so many charisma points, then the interaction isn't there because you are friends right away. I did find though, that when you meet someone and you do not get the "get to know" interaction, that you can still find out all of the traits, but you have to keep chatting, which seems like an eternity, but it can be done. I have a couple of sims that no matter what I do, cannot get the last trait. So that kind of blew my theory out of the water, lol. Oh well, we will just keep trying, I do not think that we will ever figure out this game all of the way.