Why do narcissist move on so easily?

Narcissists move on so easily because they’ve gotten what they wanted from you. Once they’ve taken what they needed, they look for someone else who can offer something new or better.

Do you stay in the theater long after the movie ends, or sit on a stopped train when everyone else has left?

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You might have been their practice partner for a skill they wanted to learn, a place to crash while they figured out their next step, or someone attractive to show off in front of their ex. Whatever it was, the ride is over.

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It’s time to get off and move on.

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It’s like finishing a meal—do you put the empty packaging back in the fridge after eating the steak?

No, you don’t. You got what you wanted, and you move on. There are plenty of other things you still want, and you know you won’t find them all in one place.

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Or keep holding onto a banana peel all day after you’ve eaten the fruit?

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All the sweet, long-term promises were just to keep you quiet. The narcissist had a shallow, specific goal in mind, and it had nothing to do with love or idealization. Those were just illusions.