Understanding bpd patterns through a Carl Jung system

Mbti is one of a thing that's developed from Carl Jung theories of archetypes. It have 16 types of personalities

I was reading this subreddit , before I didn't knew what is bpd , but I knew about mbti and I noticed many patterns that matches to certain personalities in mbti. Like enfp infp etc

My ex is enfp and the more I read the subreddit , the more I noticed similar bpd patterns in her and multiple other people with same mbti.

Mbti have 8 functions. Introverted thinking , extroverted thinking , introverted sensing , etc and different order of them constitutes a personality and there are 16 of them.

I analysed the mbti functions of my enfp ex and it's below

Obviously, this doesn’t prove she’s ENFP, and MBTI cannot diagnose abuse, BPD, narcissism, attachment issues, etc. But as an 8-function thought experiment, the pattern is interesting.

Ne–Fi: Fi reaches a strong emotional conclusion — “this relationship feels wrong/unsafe” — and Ne rapidly reinterprets the relationship around it: “Maybe what I thought was love was actually control.” This can make the past suddenly look completely different without the person necessarily feeling that they are “rewriting history.”

Si inferior: Past events become selectively emotionally loaded. Small incidents can suddenly feel like evidence of a larger pattern, producing: “Now I finally understand what those years really were.”

Ni shadow: Ne normally sees many possibilities, but under stress shadow Ni can collapse everything into one dark certainty: “I know who he really is and where this relationship will lead.”

Te tertiary: Once Fi has reached the verdict, Te executes it decisively: end engagement, block, cancel plans, separate finances, remove access. This explains the sudden switch from emotional warmth to almost administrative coldness.

Fe shadow: Social validation can strengthen the new narrative: “Other people understand why I had to leave.” Once friends/family are told one version, reversing course becomes psychologically harder.

Ti Trickster: This doesn’t mean ENFPs are illogical or dishonest. But under stress there may be less pressure to reconcile every contradiction: “I loved you yesterday, but what I understand now changes what all of that meant.”

Se Demon: When reality itself becomes unbearable, the impulse can become scorched-earth: MAKE THIS SITUATION STOP. Block, disappear, remove reminders, refuse discussion, create immediate physical/digital distance.

So the unhealthy hypothetical sequence could be:

Fi: “Something feels deeply wrong.”

→ Ne: “Maybe the whole relationship meant something else.”

→ Ni shadow: “I finally see the truth.”

→ Si inferior: “These memories prove it.”

→ Te: “Then I need to act.”

→ Fe shadow: “Others validate this.”

→ Ti Trickster: “I don’t need every contradiction reconciled.”

→ Se Demon: “Cut everything off completely.”

Meanwhile, the abandoned partner experiences:

“Yesterday we were getting married. Today I’m apparently someone you need to escape from. What happened to the reality we shared?”

That’s why this kind of breakup can feel so psychologically destabilizing: you’re not only grieving the person, but the shared version of reality itself.

Again, none of this means “ENFPs do this.” Healthy ENFPs can be loyal, accountable, nuanced, and stable. It’s only a function-based way of describing how an extremely stressed or dysregulated ENFP might move from intense attachment to abrupt total cutoff.