I'll throw in my 2 cents which is very similar to what others have posted.
I'm both cold and warm with about 3 settings. Most people get luke warm, polite, "nice" version of me and this means I recognize you as a fellow human being. People I like get a very warm, funny, weird, extremely open friend that always helps out and follows thru. I'm caring, supportive and disarmingly honest. People I dislike get a civil, robotic experience. I don't smile at you, I don't ask you personal questions, and I probably avoid contact with you.
I would say I'm always feeling something but it's usually the social situation, work environment, or external emotions being projected to me. I'm honestly better sorting out other peoples emotions and what they are dealing with than my own. Im usually thinking about my emotional state in a very detached, clinical observation manner when I actually take time to process how I'm feeling.
I think I cry more than most guys I know. I have noticed that I do tend to cry over art the most (film, music, books) when the piece evokes an strong emotional trigger that I personally relate with. I cry like a baby at the movie About Time. I don't really have control over those strong emotions. When they hit I feel it intensely and ride it out.
People are often confused by me. I think I show up as inconsistent or not genuinely the same with every one. I have noticed that I tend to mirror those around me. If I'm with a quiet introvert i will match their energy, and around loud extroverts I'll jump in and play loud with them. To me this resembles something like my superpower is understanding and feeling other people, but I can lose my sense of self if I don't have boundaries. It's kinda like Rogue from the XMen. I absorb other people but if I absorb too much for too long I start to resemble them and lose myself.