Part of me (probably sadistically but whatever) wants to catch her in a lie since she seems to have historically gotten away with everything and been pretty spoiled in the past

I think there's a part like that in all of us. If you are fine with breaking a plate then go for it. It all depends on how you do it, the goal is not to engage in pointless argument with them or try to win one. Be quick, be firm and be done with it.

Here's how I would go about it: Treat her nicely, give her the time of her life, make her think you want to make her an LTR. until the moment is right, then you break it to her: "Hey, I know you lied to me and though it's been nice knowing you, I don't want to deal with that. Wish you the best and goodbye." Then cut off all contact. No closure, no explaining, no arguing.

I did it to a plate because she was talking to her ex behind my back (and lied about blocking him) and she broke down crying and got obsessed for a few months. I don't know if my way is the right way to do it, perhaps someone else has a better idea but hope it gives you some options

unpromptly

That's a negative

hopes I’m doing the same

Sounds like she was trying to bait you into dropping your roster while evaluating you for commitment, before actually trying to commit.

On top of that, she called him a coworker. Not even a friend lie, COWORKER. Imagine you LTR her. Every time she uses the word coworker, you'll subconsciously wonder if they are fucking or actually from the same job

Wouldn't LTR in my opinion. This is a subtle lie but the way she lied would will instill mind games every time she mentions someone that you'd otherwise think was platonic/not cheating down the line

I would never be able to trust a girl in a relationship again after a lie like that

Also, even if you were a hypocrite, I still think this is a dealbreaker. If she told you that she was only seeing you, but was seeing a bunch of other men on the side in the event that this falls through, there’s no reason to trust that she won’t keep a few other Chad’s in her back pocket.

If you’ve had even a fraction of the success with women sexually that you’re saying, I’m fairly certain that she wouldn’t care about your plate spinning anyway. You’re like a final boss; get a guy who has no reason to commit to one woman to commit (beyond the normal reasons like starting a family) is a major achievement.

But yeah, if you did lie (which you didn’t), that wouldn’t excuse her own behavior. Just something that a guy who feels the need to deceive his woman has to work out on his own.