It's a horrible thing.....my husband has lied in the past on terribly serious matters.
It has impacted on our 35 year old marraige and relationship in so many ways.
In the end it changes you. Living with a partner who lies so easily can make you feel somewhat insane. Believe me!
They don't understand or know the difference I think. Ingrained from child hood There seems to be no conscience involved.
My mother in law ( not a witness) is a shocking example of verbal deceit....I love her anyway, she really tries hard to be a good person. But it's this incredibly childish lying and avoidance....ugh.