A narcissist's behavior can be complex and can vary depending on the individual and the specific circumstances. Generally, there are several possible reasons why a narcissist might suddenly not care about what you do:
Devaluation and Discard: Narcissists often follow a pattern of idealizing their targets in the beginning of a relationship and then devaluing them later on. Once they feel they have gained control or have lost interest, they may start to devalue you and show less interest in your life or well-being.
Lack of Empathy: Narcissists typically lack empathy and have difficulty understanding or connecting with the emotions of others. As a result, they may not care about your feelings or experiences.
New Source of Narcissistic Supply: Narcissists are constantly seeking validation and admiration from others, known as narcissistic supply. If they find a new source of supply that they perceive as more fulfilling or exciting, they may shift their focus away from you.
Manipulation Tactics: Ignoring your actions or emotions can be a way for narcissists to manipulate and control you. By showing indifference, they may be trying to make you feel uncertain, question yourself, or seek their approval.
Personal Agenda: Narcissists are often driven by their own needs and desires. If what you do or say doesn't serve their agenda or enhance their self-image, they may not show interest or concern.
Emotional Regulation: Narcissists can have difficulty managing their emotions and maintaining stable relationships. Their lack of emotional regulation can lead them to withdraw or disengage without warning.
It's essential to remember that dealing with a narcissist can be emotionally challenging and emotionally abusive. If you find yourself in a relationship with a narcissist, seeking support from friends, family, or a mental health professional can be helpful. Establishing boundaries and considering distance from the narcissist may also be necessary for your well-being.