Our I/F commonalities kept our marriage alive for 25 years. Her S/J conflicting with my N/P tortured us for 25 years. . she left last year. Since then, i learned mbti (sorta); she did not. And finally, after a whole year of atoning for my failures, found the crux... .Neither of us knew personality psychology; So we were never able to identify why we had so much pain, failure, drama, conflict etc....i now believe it was the s/j and n/p conflict that we never identified. . in english, i'd say it was about her being hyper-REALTY focused and me being hyper-IDEALISTIC focused. . . we failed to communicate; she was speaking greek, i was speaking german. . of course there were those natural I/F moments together that kept this dysfunctional (codependent?) relationship together so long.