Instantly drawn to INTJs. Similarly drawn to ISTJs for friendships...
I had a really good relationship with an INTJ woman long ago. I absolutely was crazy about her. It was great that she went right after me with no hesitation (we were actually roommates at the time). She said it was my exuberance and emotional honesty that drew her...and oddly enough, my wild mood swings. Those fascinated her. We could talk about anything and everything. I loved her coolness. Her decisiveness. How she seemed to see ten steps ahead of everything. I also loved the feeling of having "special access" to her. She was so reserved with others (she had no idea of how attractive this made her...you TJs!) and I loved how open and sweet she was with me. Like a different person. Just beautiful. We just had this super-easy acceptance of each other because it was very easy for us to see the best in each other. She was just so okay and calm with me and that felt so wonderful to me as an ENFP. She always has this look in her eye that said, "you're wonderful no matter how off the wall you are." It felt protective toward her--emotionally protective. We were very much into looking after/taking care of the other...not in the ways that I'm making it sound like.
The downside...she could be really goddamn condescending. Rolling her eyes and saying "Oh ____." I hated that so much. *pat pat* Oh my cute little ENFP is upset! If I got more upset, she'd just smile her little cat smile and give me another pat. It could be really awful...I'd almost prefer an EXTJ harshness than this smug shit. But I could really flip out so... It wasn't good then but we usually got past such moments quickly. I just hated that it was because me letting it go. She didn't believe in apologizing...wrong? FTS. That really hurt.
I have been very close friends with an INTJ for a very long time. She is just an amazing person. Understatement. I cannot really talk about my relationship with her or how I feel toward her...it's really beyond what I can express.
INTJ men...that testing thing. Annoying and the deliberate temptation to fail just to see what happens...well, already know but just to bring it about. But this may be an enneagram thing more than an INTJ thing.
Can the relationship work? Maybe. Won't lie...the attraction is there for me in a big way. The rest? Who can say? It's not going to fail or work just because it's an ENFP/INTJ pairing. It's going to work because the two people in it want it to, are willing to make the sacrifices to keep it together, and have their shit together enough to make it work.