I am an ENTP sometimes edging towards ENFP. For four years I was in a relationship with an ISFJ edging towards ISTJ girlfriend who was - as u can imagine - quite a challenge for me. She would be very focussed on her schedule all the time, setting herself goals and having trouble opening herself up emotionally. Although I thought she was very cute and adoring in her ways, she would be very annoyed if I communicated that to her. Like I wasn't taking her seriously or even insulting her. If I told her I did appreciate her and had a lot of envy and respect for the way she was able to take charge of so much she would seem even more annoyed. I also felt she didn't quite appreciate or maybe show her appreciation for my part of the deal: getting her out of her shell, pushing her towards more adventurous nights out, vacations or ideas, making sweet love to her... I realise my world seemed way to chaotic for her at times but at the same time I thought hers could be pretty dull. At our best we were the full deal and got the best out of each other, in the end we both lost intrest and started living our very seperate lifestyles.
That said, I seem to have a thing going for ISJs. They attract me because I feel a lot of complementarity and find them very refreshing in their pragmatic approach at times. They put my feet on the ground when necessary which can be a good thing for ENTPs. I've met this new girl and I'm pretty sure she's ISJ too.
My question to you ISJs is: how do I avoid this same situation? What went wrong in your perception? Any succesful relationships with ENTPs at all?