I can empathize with this as well. I never outburst publicly, even among trusted company, when I am outraged or deeply sad, but inside I do react strongly to what people do and say and my emotions cause me to take actions that could be extreme in regards to the situation; which is usually some form of running away - making myself unreachable by most means. I grew up surrounded by hypersensitive people who flew off the handle easily and often took it out on me (lowest pecking order in the family) so I became an expert at repressing my own feelings to avoid conflict. Unfortunately, as an adult, I keep attracting the same kind of personality to myself relationships and friend-wise. I wonder if the gentle souls are invisible to me, lol.