They usually shape (often through abuse) their partner into what they need to get that constant admiration and care. Basically, spouses of narcissists end up sacrificing everything to be able to be there and please their ever-hungry-for-praise partners.
How do narcissists react to each other?
Emotional reactions So when they encounter a piece of information about narcissism they immediately might feel exposed, ashamed, betrayed, or attacked. Moreover, they often take things very personally and think that everything is about them. Feelings of deep shame are often followed by strong anger or rage.
What do narcissists do to their partners?
Narcissists view partners as trophies under their power and may expect partners to show deference and adoring behavior throughout the relationship. Manipulation of a partner is emotional abuse, and narcissists resort to some pretty low behaviors if they feel that they are losing their hold on a partner.