It depends what the NF or NT is looking for, I guess.
Being ENFP, I'm attracted to many different types of people, for different reasons. With NTs, I'm really drawn to INTJ men. Other the other hand, I am incapable of getting along with NT women for any extended period of time. My experience with male NTs is that I usually frighten them off, but I seem to meet mostly INTP's and ENTP's, and my experience with INTJ seemed much more positive.
NFs and NTs are generally paired together because they speak the same language, but are different enough to attract.
S's speak a different language, and communication is so important in a relationship. NF's speak the same language, but are more similar. As an NF, SPs are mysterious because we're so different and seem like better friends to me, with the possible exception of ESFPs for me personally, and SJs don't attract me at all... they're great friends, but a relationship with an SJ sounds horrific to me.
With other NFs... I'm drawn to other ENFPs romantically, but I wonder sometimes if that sort relationship would burn out. Does anyone have any experience with that? As for INFJs, which ENFPs are often paired with... it doesn't work for me, and I don't know why. It's the sort of relationship where everything seems like it should work. I think with the shared NF making you so similar, the I/E J/P difference is just irritating.