Anonymous wrote:Sounds like mental illness / pathological lying.
Yeah the lying is weird. Sounds like she likes to cross boundaries and maybe testing how you will react -- the teasing, requesting favors, the lying all sound provocative to me, especially because as you say they are small transgressions. She likely knows if she really went for it, others would recognize it as a problem and she'd be called out. But by going for these little provocations, she may be testing to see how far she can push it.
Even the dating your friends thing sounds like a boundary thing in this context. She sounds like she is very enmeshed with your life and becoming more so. How did you become friends? Did you meet through these mutuals or were you friends first and then you introduced her to these other people. If the latter, I'd tread very carefully because that really does sound like a personality disorder.
But yeah, I would not be friends with this person. I wouldn't call her out at this point either -- likely nothing to gain. I'd just fade out but remain friendly, maybe mirror her level of enthusiasm when you see her but no more. Don't give her any ammunition to use against you since the teasing shows that she is willing to try and exploit vulnerabilities.
I know this sounds like an overreaction but there's a lot of kind of secret sociopaths out there, and many of them are charming, smart, and well liked by acquaintances. It's really not that unusual -- I know very few people who haven't encountered at least one person like this in their life. And probably most of us have met more than that but if you are not targeted by them you might not even know because their charm and social skills conceals a lot.