Scientists reveal why those who have been unfaithful will do it again

The old adage 'once a cheater, always a cheater' appears to be true. According to a new study, people who have been unfaithful in the past are far more likely to do it again - compared to those who have always been faithful.

Researchers say this is because infidelity desensitises the brain from the negative emotions linked to lying and  their brains become immune to lying

Therefore, even if a cheater feels guilty about lying the first time, they are less likely to experience the same level of regret the next time around.
The study was  published in the journal Nature Neuroscience.

Study co-author Neil Garrett, a psychologist at University College London, told Elite Daily:

 'What our study and others suggest is a powerful factor that prevents us from cheating is our emotional reaction to it, how bad we feel essentially, and the process of adaptation reduces this reaction, thereby allowing us to cheat more.
'With serial cheaters, it could be the case that they initially felt bad about cheating, but have cheated so much they've adapted to their ways and simply don't feel bad about cheating any more.'

When we deceive someone, the part of the brain that regulates emotion - called the amygdala - is activated, and we can feel shame or guilt.