questor wrote:
Just tell this "friend" that his constant lies are not cool, and that no one buys them anyway. From now on, when ever he tells one of his lies, just tell him, "Hey! Lies aren't cool!" Then walk away.
Off this note, if you don't feel comfortable telling someone that you don't like their lying, then don't. You might be provoking unnecessary trouble. Just simply try to stay away from this person and do not trust them is all you can do for yourself. Other people may have different experiences with this person, so do not worry about if those other people will get along with him/her or not.