I have welled up in T while relaying angry feelings. It seems anger is the only feeling that leads to tears, probably because I am so good at suppressing anger. As much as I avoid crying, it is more preferable than loosing my temper. It only happened a couple of times, and I wouldn't consider it to be a cry at all, but my T said the same thing each time: allow yourself to cry. I didn't though, some weird control thing comes over me and the emotion stops.