Sadistic type narcissist use this tactic of leaving you hanging or simmering when you need to discuss things on your mind or in your heart. They will easily talk to you when they need something, but anything you need they just can’t bother and when they know it bothers you.
They make sure to continue to invalidate you and watch you squirm. Sometimes you may even feel angry that you are being invalidated and they will then point to your reactions as “crazy”, “abusive” or just act like they don’t hear you, or even disappear because you were starting a fight.
It’s all so dehumanizing to be treated like your thoughts, feelings and needs are not important enough to be validated by someone who claimed to love you. This is the crazy making of narcissistic abuse. It’s best to leave these relationships and find people who are authentic and can reciprocate your generous heart back to you. Keep healing survivors.