While I cannot predict specific individuals' behavior, it is essential to understand that triangulation is a common tactic used by narcissists to create drama, jealousy, and insecurity in their relationships. Triangulation involves involving a third party in a relationship, either by talking about them to the other person, comparing the two individuals, or seeking attention and validation from the third party while still in a relationship.
In the context of your narcissistic ex triangulating you with her new supply (the extremely nice guy), it is possible that she may repeat similar patterns of emotional manipulation and abuse with him. Narcissists tend to have consistent behavioral patterns across different relationships because these patterns are driven by their personality traits and insecurities.
Here are some potential scenarios:
Idealization Phase: At the beginning of the relationship, the narcissist may idealize the new supply, showering him with attention, love, and compliments. This phase can be intoxicating for the new supply, making it easier for the narcissist to establish control.
Devaluation Phase: As time goes on, the narcissist's true nature may emerge. The devaluation phase involves emotional abuse, criticism, and degrading behavior. The narcissist may compare the new supply unfavorably to you or use him as a tool to make you jealous or insecure.
Discarding or Hoovering: If the relationship continues, the narcissist might discard the new supply once he no longer serves her needs or if she finds a more suitable source of narcissistic supply. Alternatively, she may use hoovering tactics to try to bring him back into the relationship if she perceives him as a valuable source of attention and admiration.
It's important to remember that the dynamics of narcissistic relationships can be complex and varied. Some factors may influence the outcome, such as the new supply's own personality traits, his ability to set boundaries, and his level of emotional resilience. However, in most cases, narcissists tend to repeat similar patterns of behavior across their relationships.
If you know the new supply and are concerned about his well-being, it's essential to approach the situation with caution. Trying to warn him directly about the narcissist's behavior might not be well-received, as he may still be in the idealization phase and might not be receptive to criticism about his new partner. Instead, focus on your own healing and well-being and consider seeking support from a therapist or support group to process your experiences and move forward in a healthy way.