<human>: How do I know if a friend or a loved one is a liar?
<bot>: You can tell if someone is lying by observing their body language, listening to the words they use and looking for discrepancies in what they say. Pay attention to changes in tone of voice, facial expressions and gestures, as well as any inconsistencies between statements. Additionally, watch for signs such as avoiding eye contact, fidgeting and changing topics quickly.