Relationships of Duality are considered the best as long term life partners. I'll share my personal experience with this combination,
Relations of Duality between psychological ("personality") types
"These relations are the most favourable and comfortable of all intertype relations providing complete psychological compatibility. Dual partners are like two halves of a whole unit. They usually understand each others intentions without any need to say a word. Dual will naturally protect your weak points and appreciate the strong ones without asking for anything in return. Interaction with your Dual allows you to be yourself without the need to adjust to your partner like in other relations. This often saves both partners a lot of energy which they can use for their own interesting activities. Conflicts between Duals are very rare and if there are any, they are normally short lived and solved without pain. Your Dual partner will love you just for what you are and if there is such a thing as true love then it could probably only occur in relations of Duality."
ISFJs and ENTJs can be an amazing combination for each other,
For an ENTJ people often coin INTPs and ISTPs as natural partners; ENTPs, ESTJs and ENTJs are also cited as good fits, but there are many reasons to suggest these are FAR from ideal! It's important to remember that unlike friends, with some commitment a spouse is someone who can be much more open and actively involved in changing their partners typical thinking patterns, this is where one could say opposites attract.
These 5 types:
ENTJ's in a relationship among these five commonly suggested types above would likely hit it off without any out-of-the-box effort. However I find that when associating with these types I engage in conversations about long thought ideas which they can follow and will even contribute many useful ideas. Being able to relate to someone on a similar level of by means of extroverted thinking is quite refreshing and can boost the confidence of an ENTJ who's used to being questioned. However all things considered over the long term these long discussions will likely end up with little more then a few casing points to help each others notions meanwhile breeding further problems in other areas by paying even less attention to their weaker traits
An ENTJ is unlikely to have an initial tendency to mesh with the ISFJ,
- The ENTJ is a master in the arts of what should be, how to accomplish it and then doing it.
- The ISFJ is a master in the arts of taking what is and carrying it out gracefully and effectively.
An ENTJ will see this person doing things out of 'rule' and will likely have the natural tendency to advise this person on "the better method" (this can seem like harsh criticism to an ISFJ). If an ISFJ is confident and unaffected by this suggestion and exposed long enough the ENTJ may start to observe amazing practicality and efficiency out them in a way not typically known to the ENTJ, the efficiency of taking what is and making the best of it. This will be FAR more balancing and enlightening for the ENTJ then a simple verbalized agreement.
My personal experience associating with the common 5 types listed above is that I will be in agreement with them and it feels great but after spending hours talking and relating I have the sense of job well done, I feel left sitting there with nothing to improve and I feel a mental bond and friendship but not attraction. When I first noticed an ISFJ I was intrigued by them yet I couldn't help but to use my natural tendency and critique their free spirited practicality and I would sit their trying to give suggestions and meanwhile feeling like their was something to their methods.
Now when I am fortunate enough to find a quality ISFJ I learn them and don't question their actions, I love how they do things. So down to earth, so free of limitations, so practical and so emotionally sound. They are of a select few who are emotionally selfless conversely the ENTJ is thoughtfully just and fair. Both these types love being creative and innovative, one free of emotional restriction and the other free of restrictions of how things should be done this can be a powerful bond and allow almost limitless potential. They also care deeply for people (again in different ways) allowing them to be charismatic, funny, just and assertive people. Their are many things that these two will have in common and will both feel more complete as a couple.
ISFJs value people who take the time to understand them, and who support the ISFJs in pursuing their goals in their own, unique way. I find myself excited and thrilled to learn and so eager to understand and love how they do things. People who don't know the ISFJ well may see their unique way of life as a sign of carefree light-heartedness (how I used to see it), but the ISFJ actually takes life very seriously, constantly gathering specific information and shifting it through their value systems, in search for clarification and underlying meaning.
I now find having a close ISFJ companion naturally gives me incredible emotional understanding, I feel so natural around them and even others when I have them in my presence. Rather then my mind having 'a few new facts' my mind starts working in emotional and intellectual harmony, when an illogical situation arises that can't be changed I'm not the least bit bothered I can make jokes about it and adapt positively. I see so much I couldn't otherwise, I can do things I couldn't do otherwise no matter how much thought and effort I applied. Situations that seemed hopeless and ridiculous are now handled with tact, grace and ease.
The ENTJ is forever grateful for this wealth of otherwise untapped potential and love to understand more, something the ISFJ will enjoy.
These two can be incredibly faithful as the ENTJ loves being in the exact right situation (the one their in) and the ISFJ loves living the situation their in to make it work.