Why Loving a Narcissist is Like Eating a Piece of Cake

People high in the grandiose, or self-aggrandizing, form of narcissism can charm anyone into loving them. Over time, though, that appeal is doomed to fade. The initial rush followed by inevitable disappointment is captured in what’s called the “chocolate cake model” of narcissism (Brunell & Campbell, 2011). Like eating a piece of a decadent dessert, you may be satisfied at first, but if you make this a steady diet, you'll feel just as hungry, or worse.

Narcissistic Admiration and Rivalry Spell Relationship Doom

According to new research by Michigan State University’s Gwendolyn Seidman and William Chopik (2026), the chocolate cake model is useful for understanding the inevitable reversal from desire (“spark”) to dissatisfaction (“strain”) in a relationship with a narcissist. Underlying this idea is, they believe, the even more fundamental nature of narcissistic admiration and rivalry. The Narcissistic Admiration and Rivalry Concept (NARC), as it’s called, describes the way that narcissists maintain their grandiose self-perceptions. The need for admiration leads them, at first, to be charming and engaging. Next comes rivalry, in which they turn to devaluing others and demonstrating their superiority

Translating NARC into the trajectory of a relationship with a narcissist, Seidman and Chopik note that when admiration turns to rivalry, the early attraction flips to dislike. Unfortunately, once you’re hooked to the narcissist, you may not be able to extricate yourself. In long-term relationships, narcissists become manipulative, aggressive, and less like to concede to their partners’ wishes. At the same time, they become less committed to the partner who, by now, is hooked.

Although all romantic relationships eventually settle down from their initial highs, the Michigan State authors propose that when a narcissist is involved, the downward spin will be both sharper and earlier. The “charisma” of the narcissistic partner leads to infatuation that will fade “as some of the more problematic aspects of narcissism rear their head” (p. 3).

Testing the Chocolate Cake Model Of Relationships

Using a nationally representative sample of separate birth cohorts of over 12,000 German adults studied over 14 years, Seidman and Chopik had at their disposal ample statistical power to document the downward trajectory of life with a narcissist over a period of 6 years. One person served as the “anchor” in each pairing. This led to an eventual participant pool of 5869 dyads, with a subset of people involved in new relationships of less than a year.

The analysis took advantage of the elegant APIM approach, in which both the anchors and the partners were studied in relationship to each other over time. In this case, changes in one’s own (actor) and one’s partner satisfaction could be traced in relationship to changes in the narcissistic admiration and rivalry among both members of the couple.

The findings generally supported the NARC framework but with several twists. Rivalry scores were associated with lower relationship satisfaction, but these effects were stronger for the anchor than the partner. As the authors concluded, “narcissistic rivalry shapes how people construct their relationship experiences”… leading the highly narcissistic to expect “especially good outcomes” (p. 8).

Narcissistic rivalry, furthermore, did not moderate the drop in relationship satisfaction, as the chocolate cake model would predict. However, because the surveys were conducted at yearly intervals, it’s possible that the authors missed some key turning points in which major conflicts or transitions occurred that exposed the damaging effects of narcissism. Another possibility is that the deeply unsatisfied would no longer remain couples for the duration of the study.

Nevertheless, narcissistic rivalry maintained its position as a predictor of long-term relationship dissatisfaction. Whether the declines occurred in continuous or stepwise fashion (as during a major transition), the fact remains that a narcissistic partner is a bad bet.

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What to Do If You’re in a Relationship With a Self-Centered Partner

Although the Seidman and Chopik findings did not quite support the pathway from initial attraction to inevitable downfall, the idea that a partner high in narcissistic rivalry will eventually harm you was supported. In the first place, a narcissistic partner will have high expectations that, if not met, can lead to an overall pattern of devaluation. The partner could, as the authors go on to suggest, erode your sense of self-worth and autonomy. Having been hooked on this person in the early days of courting, you’ll find it difficult to extricate yourself and worse, come to believe this person’s constant fault-finding.

As you contemplate a new relationship, the findings provide you with some words of caution. That charming and engaging individual may be too good to be true. Look for signs suggesting that, even if not with you but with others, this person seeks to be the center of attention. Be on guard for when self-aggrandizement turns into devaluation of everyone else, especially you.

What if it’s too late, and you’re in this situation now? Assuming you want to remain with your partner, try to find a way to point out the hurt it causes when your partner starts to burst your self-esteem bubble. The study’s findings suggest that there are variations in the trajectories of relationships with narcissists over time. Stepping in and trying to change that trajectory can ensure that yours doesn’t suffer the fate of the chocolate cake.

To sum up, narcissists can prove to be unsatisfying as relationship partners, but knowing the risks can help you beat the odds and find fulfillment.