Why are we so attracted to INFJs?

I am an ENFP - deeply emotional, caring, adventurous, social and think about big ideas often and like to make others happy. But what is it about us being so drawn to INFJs (and also INFPs)? I have been romantically interested in more than a few INFJs and I have a decent number of introverted and specifically INFJ friends too. I personally think it might have to do with the extroverted-introverted dynamic where ENFPs help INFJs open up and feel validated emotionally thanks to our social skills and emotional depth. I think INFJs need a lot of trust to open up and be themselves. Thoughts?