So, can you restrain your emotions? Can you look like a cold hearted bastard on the outside, but on the inside you're burning with fury, sadness, love, jealousy, rage, a desire for revenge, companionship, loneliness? Or do you simply let it all out, not lying to anyone or yourself. Also, here is a commonly known hint - if you don't show anyone your feelings, they won't know how to hurt you (along the lines of something like that). Make your weakness your strength.