I'm generally pretty calm and to-the-point, to the extent that I can come across as pretty cold at first. But if there's something that gets to me, whether it's happy / sad / infuriating or whatever, I can let it out and process it now, rather than bottling it up. That lets me appear as even more of an emotionless robot the rest of the time! Yay, I guess?
I have real trouble empathizing with people around me, even if I can read them on a conscious level. I guess that either makes me autistic or a sociopath.