I wondered long and hard about this post, because I’m honestly going to advise you to do pretty much the opposite of what I did. The person I am now wouldn’t have tried to take revenge on my narcissistic ex.
The person I am now would have fired her into touch after about a month when she got weird and never given her a second thought.
But I also know that feeling, facing up to the fact that you have been used, pretty much humiliated by the person that looked you straight in the face and told you they cared so much. And just sometimes you need to get a modicum of revenge. You need to punish a narcissist.
Here’s the kicker: it’s really easy. When you stop caring what they think and you stop dancing to their tune, narcissists are really, really thick.