I'm just making an observation so please don't take offense or feel like I am pointing fingers.
It seems to be kind of a trend I've picked up on in the social atmosphere of human interaction. Compulsive lying to try to gain praise and appreciation from peers, or to suit/establish one's reputation. I've seen it especially in ESFPs.
And after I realized what was going on, saw this whole thing being played out right in front of my nose, I was kind of put in a really awkward position. A position where I know they're lying but wouldn't have it in the life of me to call them out. Lies are annoying and make me lose trust, but I wouldn't want to ruin the goodness of a friendship in calling someone out and making them feel like a fool.