When a partner repeatedly dismisses your needs or makes you doubt yourself, it is understandable to look for an explanation. “Narcissist” is a common label online, but a relationship article cannot diagnose your partner. You can take troubling behaviour seriously without settling on a diagnosis.
Describe the behaviour and its effect
Instead of building a checklist of personality traits, identify what is happening. Does your partner insult you during disagreements, disregard a clear boundary, control your money or threaten you? How often does it happen, and what follows when you raise it?
Keep examples specific: “You read my private messages after I asked you not to” gives you clearer information than “You are always selfish.” If it is safe, write down what happened and how it affected you.
Separate a clinical condition from an online label
Narcissistic personality disorder requires professional assessment. Treatment generally centres on psychotherapy; a clinician may also address other conditions, such as anxiety or depression. The Mayo Clinic overview explains diagnosis and treatment. A diagnosis does not mean every person has the same history, motives or capacity for change.
Make boundaries about your own choices
A boundary describes what you will do. For example: “If the conversation becomes insulting, I will end it and consider when I am willing to talk again.” It is different from a threat intended to make someone comply.
Notice whether a partner respects the boundary consistently. Apologies, promises or the right terminology are less informative than sustained behaviour. You are not responsible for persuading someone to seek treatment or for doing that work on their behalf.
Get support before making a difficult decision
Talk privately with someone you trust or seek individual professional support. Consider what you need emotionally and practically, including housing, money, children and privacy. You can care about someone and still decide that a relationship is not workable for you.
If you fear retaliation, threats or violence, plan with a qualified support service rather than relying on a confrontation. The National Domestic Violence Hotline offers safety-planning information. Contact local emergency services if there is immediate danger.