I can relate. In the last few years, I have been on both sides of that. Many people say the medication we take makes us numb. But before I was on medication a few years ago, I realized after quite a while that I could not cry. I wanted to so badly, but it just didn't happen. Then I slowly started taking meds. A few months later, I could cry and did so hysterically all summer long. Then I was hospitalized and put on some other medication so I don't know how much this affected me or if it was just natural like the first time, but I can't cry. I definitely sympathize and feel emotion, but I don't get that feeling like I want to cry. But my face remains very emotionless and robotic. It's kind of easier actually.
In general, I would say I was only a person over my life that could cry when I was alone. If I was in some kind of group setting and someone was crying or getting really emotional, I would totally sympathize and want to be, but it's like I just couldn't do it in a group. So then I felt like a total freak Compared to everyone else. I feel like it's a no-win situation.