You can't diagnose a partner, and this isn't a diagnosis — but you can recognize patterns. Narcissistic partners tend to need constant admiration, lack empathy for your feelings, react to criticism with rage or withdrawal, and cycle between idealizing and devaluing you. If most of these fit and you feel smaller than you used to, the label matters less than what it's doing to you.
Only a qualified clinician can diagnose Narcissistic Personality Disorder, and most people who are hurting others are never assessed. So the useful question isn't “do they meet the criteria?” — it's “is this pattern harming me, and does it keep repeating?”
Confidence, ambition, or occasional selfishness aren't narcissistic abuse. Everyone can be self-centered sometimes. The difference is a persistent pattern of entitlement and low empathy that leaves the people closest to them consistently diminished — and a refusal to repair it.
Usually not. Labeling a narcissistic partner tends to trigger rage or manipulation and rarely leads to change. It's more useful to focus on specific behaviors, your boundaries, and your own support — ideally with a therapist's help.
Change is possible but rare, and only when the person genuinely wants it and does sustained therapeutic work — not because a partner asks. You can't therapize or love someone into changing. Base your decisions on their consistent behavior, not their promises.
Worrying that you might be the problem is, itself, a sign you likely have the self-reflection that abusers lack. A good therapist can help you see the dynamic clearly rather than carrying blame that isn't yours.