The title is really a metaphor. I don't really mean to ask if you wear a heart on your shirt for the record.
What I mean by this is, do you express your feelings and emotions honestly or do you bottle them and keep them hidden? For example, say someone says something that you find offensive or insulting or it just plain pisses you off. Would you let them know it and fight back, or would you do nothing and keep your emotions kept inside?
Me, I generally try to keep my emotions kept inside. There are a number of things that piss me off or get me worked up, but I don't react. I keep my feelings bottled up and don't really do anything. I do have a few exceptions however. Somethings I am passionate enough about to speak up and contradict someone on. One of those being Fluttershy. Dear Celestia does it rub me the wrong way when people call her sexy... she's beautiful, not sexy.
So what about all of you? Are you like me, who tends to keep things inside, or do you make yourself heard?