I know one or two of these, unfortunately. They have convinced themselves (and sometimes others) of their innocence or falsehoods. It's sad to watch, bc they truly feel they are fooling you too. But in reality, you just don't bother to correct it.
I wish I knew this- I was way too trusting that people really are who they pretend to be...but you showed your true colors- Sad! you are a disgusting person! You know who you are- and I hope you read this...some role model you are very sad and pathetic!