YES! I have experienced this FIRST HAND!

I almost married a guy who was a compulsive liar just like this when I was in my early twenties!!!!!!!!!!!

He basically wanted to make himself look like a bigger person. Said he traveled all over the US because his doctor told him he had a year to live. Says he has been allover and even lived in Colorado and had a horse named "dog".

Also lied about being in the Marines. Says he has been to "secret" missions in foreign countries and was then debreifed and "honorable discharge". Claims that nobody knows about these secret missions and even takes on the persona of someone who had been in the military. In my youth I believed it only until he showed me a supposed "top secret" document from the military that he supposed to have gotten from a close marine friend who I never met. I later was digging around on his computer ( out of skepticism) and found the document created by.....you guessed it......him.

When I had finally had enough of the lying and we were splitting, I confronted him. He would say nothing. Nothing at all. Would not even budge that he KNEW he was lying. That was about 8 years ago. He is a good hearted person that will do anything for you. And very Funny too. I had known the guy 10 years. He lied about everything to me and I felt I could not continue the relationship because it was all a lie. His whole existence. He did not lie to HARM anyone - just to make himself look like a bigger person. I confronted him 8 years ago. After some time we were able to remain friends. He still has a big piece of my heart as a human being. I talked to his mom when we split and asked her about the lying. She said that his FATHER had been the same way - even thought the father was never in his life so, Hereditary? Who knows?

He went on to marry a fantastic girl and have a child with her. His son is so funny just like him. After them being married about 4 years she sent me an email and FLAT OUT asked me if I thought her husband was a compulsive liar. I was honest and told her YES. And I also told her thats why I was also vauge about how we broke up. I did not want to be the one to spill the beans to her. She left him for a few months. In that few months they were sharing the house and he would borrow a spare bedroom from me the two days she was home (they both work shift work).

One night, I flat out told him the lying had to stop. I'm not sure if it work. He and his wife since have reconciled. I have yet to ask her.

SO I can HONESTLY say - I know what you're going through. I handled it the way i handled it. Not sure it is best for you since he's your dad. Did you ever think a therapist may be able to help? Maybe someone trained in psychological disorders? Its worth a shot.

A very difficult thing to deal with. I wish you the best!