While it's difficult to make sweeping generalizations about any group of people, including narcissists, it is possible for a narcissistic individual to regret being dumped by someone and even admit that they lost something valuable. However, their motives for doing so may be quite different from those of non-narcissistic individuals.
Narcissists typically have a grandiose sense of self-importance and may have difficulty accepting rejection or failure. When they are dumped, they might initially respond with anger, denial, or attempts to devalue the person who rejected them. However, once the initial shock wears off, some narcissists may experience a "narcissistic injury," which is a blow to their ego.
During this phase, they might start to feel wounded and insecure about their self-worth. As a result, they could resort to tactics like hoovering (trying to reel the other person back in), love bombing (overwhelming the person with affection and attention), or even admitting that they made a mistake in losing someone who they now perceive as valuable.
It's crucial to recognize that any regret or admission of loss from a narcissist may not necessarily be a genuine expression of remorse or a recognition of their toxic behavior. Instead, it may be a strategic move to manipulate the other person into coming back or to regain control over the situation.
If you have experienced a relationship with a narcissistic individual, it's essential to prioritize your well-being and emotional health. Narcissistic relationships can be emotionally draining and damaging, and seeking support from friends, family, or a therapist can be beneficial in navigating the aftermath of such a relationship.