Do narccisist change their partners personalities into more negative people. Eg. They become snobby, aloof, opinionated, miserable. My brother in law who was once happy and funny has become negative since meeting his wife. We think she is an narcissist as she has some subtle traits but then we don’t know what she’s like in private. She cuts you off mid conversation, tries to control your decisions, can’t take no for an answer, if she buys our child a present she always has to state her children have it, her children are have to be the centre of attention even if your child’s there, says odx things, no empathy and no sense of humour. And does sneaky things for brownie points. by Sandy | Jan 31, 2017 | Conversation of Peace