It's important to note that individuals vary, and not all narcissists will respond in the same way. Additionally, these feelings can be influenced by the specific dynamics of their past relationship and the circumstances surrounding the breakup.
Envy: Narcissists often crave admiration and attention from others, and seeing their ex-partner getting married might trigger feelings of envy and jealousy. They might feel that their ex has found someone new to lavish them with attention, which could challenge their perception of being the most important person in their ex-partner's life.
Loss of Control: Narcissists like to maintain a sense of control over their ex-partners, and witnessing them moving on and making significant life decisions, such as getting married, can threaten their sense of power and dominance.
Ego Blow: Narcissists have a grandiose self-image, and the idea that their ex-partner has chosen someone else as a life partner can be a significant blow to their ego. It challenges their belief that they are superior and more desirable than others.
Invalidated Sense of Self-Worth: The narcissist might feel rejected and unimportant if their ex-partner's new marriage suggests that they were not as valuable or irreplaceable as they thought.
Rage and Vindictiveness: Some narcissists may react with anger or a desire for revenge. They might feel slighted or disrespected, leading to a desire to hurt or undermine their ex-partner's happiness.
Indifference or Disinterest: On the other hand, some narcissists might downplay the significance of their ex-partner's marriage and act as if they don't care. This reaction can be a defense mechanism to protect themselves from the emotional impact of the situation.
It's essential to remember that narcissists have complex personalities, and their reactions can vary depending on the individual and the specific circumstances of the breakup. Some narcissists might even feel a combination of the emotions mentioned above. As always, it's best to seek professional advice and support if you are dealing with the aftermath of a relationship with a narcissistic individual.