Trust me -- she's in for the same terrible bs that you went through. If she's happy, she just hasn't seen the real him yet. Narcissists don't change just because they found a new toy.

He's not making it work with someone new -- he's manipulating her to charm her and reel her in and then the soul-sucking will begin. Narcissists love novelty and as soon as it wears off they begin emotionally abusing.

Don't beat yourself up for being curious. Anyone would be curious about this new development so soon after your breakup. And who's to say he didn't have this other woman on the backburner DURING your relationship. Don't trust a narcissist's timeline of historical events EVER.

Of course you feel like he's the one who left. Narcissists distort reality that way. They flip it around. The one doing something wrong is always you, never them, they're never done anything wrong in their life.

The perspective you need to take is: This is for the best. You got that monster out of your life. Emotional abusive people wreck lives and you got out with yours intact. You also stood up for yourself when you realized he was lying and that's wonderful. You affirmed your self worth and enforced your personal boundaries. That's brilliant work.

The one with a beautiful future here is YOU. There is genuine love, respect, altruism, authenticity available to people like you. That's not a part of a NPDs life. Their world is full of childish defense mechanisms and wholesale selfishness. They won't empathize and in a way that means they never really KNOW you as a person, they just know how you're useful to them. That's not someone you want to give your love to.

It's not that they CAN'T empathize - they just won't empathize. It's not a habit of theirs. They get by without empathizing with others.