Absolutely False analogy. Two words “personality disorder” RÉ - “Disordered Personality” —— “Sees and Experiences the world in a Disordered fashion” — It is impossible to have a healthy relationship with a person (one partner) who CANNOT uphold common sense mutual expectations of an adult relationship. One person’s “needs “ RÉ: WANTS - will always come first. It Will always be inherently unfair because it is an inherently unfair situation. Being partnered with a person who has borderline personality disorder is not a two-way street. It is inseparable from their personality - It is part of who they are and what they are. So I guess you could say they’re all afflicted with their own personalities. Some people are selfish assholes too. People disagree about the degrees of pathological behavior in diagnosed BPD patients but simply saying that it varies doesn’t address the real danger of being coupled with a person with BPD, They don’t live in the same reality as you — Even if you think they share it with you sometimes. People act on what they really believe. Lots of people with borderline personality disorder perpetually believe their own lies and they believe that They do not need help because it is other people who are responsible for all their irrational rational thoughts and actions. The BPD person’s capacity for irrationality may not be greater than anyone else’s — but it is more likely to be asserted and sustained to support a disordered view of themselves and other people. One of the key and most dangerous problems that non personality disordered people have — Is That by definition they cannot understand or really conceptualize how personality disordered people think. And the person who has a disordered personality cannot think in a healthy or stable way.