So, in short, the answer is yes, a narcissist will continue to come back after “no contact” until their targets cut off all forms of narcissistic supply, leaving them no choice but to go find other prey upon which to feed.
Unfortunately for you, narcissists don't like being alone; they're always searching for a source of supply, someone that can make them feel better about themselves. Sometimes they'll find a new source, but often they'll come back to you.
The simple answer is YES they will. When a narcissist ex blocks you it's more than likely that they are just playing silly mind games with us.
In most cases, the narcissist will come back at you immediately after you put in place the no contact rule. Considering how important their ego is to them and how they need that constant attention from their partner, they would come for you immediately.
They block you because they want you to feel unstable and crazy. They want you to reflect on what you did to make the blocking happen, even if you had nothing to do with the decision. This is part of the devaluation stage of narcissistic abuse. The narcissist wants to make you feel less of a person.
Being ignored or blocked can both be perceived as a threat to a narcissist's ego and self-esteem, as it may make them feel rejected and unimportant. However, being ignored is generally more likely to bother a narcissist than being blocked.
They will get fearful and nervous as soon as you begin ignoring them. This is what happens when you ignore a narcissist. They may start to obsess around you even more by sending text messages like “I sincerely apologize” or “May we talk?” Don't mind them, and witness the effects of ignoring a narcissist.
No contact with narcissists often puts them in a spiral of toxic behavior. They will resort to love bombing, begging, self-victimization and other toxic methods to gain back your attention. In other cases, they may just disregard you and find someone else.
One of the main reasons why a narcissist ignores you is that they want to control you. More likely, they want to regain control of you. A narcissist uses ignoring people as a way to punish them. Especially if they feel like you are pulling away.
When that occurs, ancient feelings of emptiness, abandonment, and shame return with such “vengeance" that they're compelled to turn up their defenses a notch, prompting them to further denigrate—through what's commonly referred to as "narcissistic rage"—those now able to see through their façade.
It definitely depends on the individual. Some are able to just block and move on. They don't really emotionally attach to you so the only reason you would get “unblocked” is if they miss the validation they got from you. They will block you to punish you, to control you, because they have new supply, to confuse you.
It is common for people with a narcissistic personality disorder to regret discarding or losing someone, but it does not mean what you might think. If they feel regret, it is not because they hurt you. It is for losing something that they value. You are a possession, not a real person.
Beware of narcissists trying to lure you back with hoovering. Breakups with narcissists don't always end the relationship. Many won't let you go, even when it's they who left the relationship, and even when they're with a new partner. They won't accept “no.”
Daramus lists some reasons why a person with narcissistic tendencies might discard you: You were too difficult for them to control. You were easily manipulated by them, causing them to look down upon you. You no longer fuel their ego, so they've moved on to someone else who can supply what they need.
At the end of a relationship, a narcissist will often spiral down a long-winded gauntlet of manipulation tactics. They may blame you for causing the relationship to fail, work hard to keep you to stay with them, make lofty promises to change their behavior, or badmouth you to everyone around them.
So when the relationship that a narcissist has with someone ends, it is common for them to move on very quickly because they need to find a new source of supply before they become consumed by their painful thoughts, feelings, and emotions.
Narcissistic relationships can last anywhere from a few days or weeks to many years. There are anecdotal observations suggesting that the average length of a narcissistic relationship is around six months, but no empirical evidence supports this claim.
They'll probably treat it as a personal attack.
This is highly likely to be an overwhelming and scary feeling for them. As a result, a narcissist is very likely to view your behavior as a deeply serious transgression and a call to arms. Go all the way with full no contact if you're going to block a narcissist.
If you ignore a narcissist and deny them their source, they may become enraged and try even harder for your attention – especially in ways that can be toxic or abusive. Ignoring a narcissist will enrage them because of their fragile egos. They'll feel humiliated and lash out against you to protect themselves.
Type As can also be dangerous to narcissists
Although they can be targeted, type A people can also become a narcissist's worst nightmare. One of the most important defenses against dark personalities is having strong boundaries yourself, and type A people are usually aware they have the right to build them.
Narcissists always want control. They don't always want you to chase them. It depends on what they want at the moment, but they always want to control you and to get you to do whatever they want at any given moment. If they're feeling lonely and insecure, they may want you to chase them.