Narcissists lose interest as the expectation of intimacy increases, or when theyve won at their game. Many have trouble sustaining a relationship for more than six months to a few years. They prioritize power over intimacy and loathe vulnerability, which they consider weak.

How long before a narcissist loses interest?

Keith Campbell has found that relationships with narcissists tend to show a dramatic decline after just four months.

How does a narcissist act when they lose?

Narcissists hate losing their supply of attention, so they wont let you go easily. Prepare for them to promise to change. They might suddenly start doing things for you that youd been complaining about. They may say youll be lost without me, or youll never find someone like me. Dont listen, Orloff advises.