I'm an ENTP.
My dual is ISFP. Yet I find them totally uninteresting or too "weak" too sensitive for them to be around me. They're either too serious or clown-ish but then have streaks of rage-bipolar-ness. My mother is an ISFJ, arghh! not fun but they are so much more reliable/dependable basically providing all the things I really hate doing or don't do well yet the ISFP is supposed to be my dual and can't cook for dear god, can't clean, messy - like myself but let's be honest. Marriage is pretty much a contract and ISFPs don't foot the bill long term wise. There are different ISFPs abound, but the type that freaks me out are the borderline/bipolar affected ones, you can usually tell by general impulsive talking chit chat and movement. And most ISFPs I run into, are fat. I am not fat.
I jive really well with SPs in general, ESTPs, ESFPs, ISTPs but not ISFPs - for relationship probably ISTP . SJs I jive well too, although for relationship reasons probably an ISFJ. ESFJs are too whiny naggy or wanting to be a part of the group without logical thinking. I only like INTPs for NT and NF, probably INFJ. So what's up with this, wrong type? or basically how I grew up in my family (I grew up with SJs) I also note a pattern. ISTP/INTP INFJ/ISFJ