People are subjected to change. One can change at any point in time. 70% of humans undergo behavioral, emotional, and psychological changes at any time in their life. However, one cannot measure or suspect when such changes might take place. But, once a person is recognized as a serial cheater others hesitate trusting them. This impacts the cheater and they might feel: "Even if I undergo a behavioral change I won't be trusted, so it's better the way I am.”