Article: According to behavioral specialists, people who are lying tend to exhibit certain body language cues that make it easy to spot a lie. Look for these body language cues to determine if your boyfriend is telling a lie. For example:  He may itch his nose often and his nose may turn red. This is known as the Pinocchio Sign, as a lie causes your cells to release histamine, which can cause your nose to itch and become swollen. He may also exhibit negation cues, like covering or blocking his mouth and rubbing or putting his hand over his eyes, his nose, or his ears. He may also avoid making eye contact with you or turn his body or head away from you as he speaks. You may notice that your boyfriend’s regular tone of voice changes or shifts when he is telling a lie. He may also stammer, pause for long periods of time, or have unusual intonations. A sudden change in his speech patterns when he is talking about a certain subject, person, or event may be a sign that he is telling a lie. Similar to the physical Pinocchio effect, your boyfriend may demonstrate a Pinocchio effect in his word choice as well. Often, people who lie tend to use many more words when lying in an effort to hide the lie or distract you from the lie.  According to a study by the Harvard Business School, liars tend to use more swear words when they speak, as they are so focused on the lie they neglect to use proper terms or clean language.  Your boyfriend may also use the third person when lying to distance himself from the lie he is telling you and he may try to change the subject quickly after he has told a lie to avoid drawing attention to it.

What is a summary?
Take note of his body language. Listen to his tone of voice. Notice his word choice and language.