She pauses frequently, stammers, closes her eyes, leg's & hands shaking, nervousity, etc. After talking, she will be restless.
Note, for some girls who are expert, they won't do what is mentioned above. Rather, they will tell you bluntly but while talking they will say something, then "No, its..." lyk that to change what they said. Fine, she may not be lieing but after talking, observe her. When she's going, she will be looking back at you almost until she disappears from your sight. Now look into her eyes and her legs. The first time she looks back, u will see restlessness, nervousity and sometimes, she walks slowly or faster than she walks before.
Then you will know she lied to you.
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