My good friend is a compulsive liar what can i do?

[Miles]

If he's like any of the people I've met who can't stop lying about things and making shit up (and based on your posts he fits the profile pretty neatly) especially when it involves lying through their teeth to good friends and/or family, then he'll never stop. It seems to me that for many of these people they stop thinking rationally about the implications/future consequences of their lying; they're focused on getting the reaction they want out of people immediately. It almost becomes a habit, a compulsion that they don't even realize they're indulging anymore, if they ever did in the first place; they may just be lying so much they start to believe their own lies, or maybe they just feel subconsciously that keeping the illusion going is less detrimental to their psyche than the potential shame of owning up to their dishonesty. I might be wrong in this case; I've never met the guy. You could certainly try calling him out again, but I've got a feeling you'll keep getting the same results. I would just leave it until his house of cards collapses around him. It may sound harsh but in my experience some people are simply beyond the level of help you can be expected to give as a friend.