Unspoken feelings can color the conversation in a number of ways. They alter your affect and tone of voice. They express themselves through your body language or facial expression. They may take the form of long pauses or an odd and unexplained detachment. You may become sarcastic, aggressive, impatient, unpredictable, or defensive. Studies show that while few people are good at detecting factual lies, most of us can determine when someone is distorting, manufacturing, or withholding an emotion. That’s because, if clogged, your emotional pipes will leak.