For the record, I actually relate a lot to the OP, as well as everything that people have been describing about INFPs. Regarding the exact word choice of the thread title, I relate to the concept of being an "outsider to emotion", as well, not just in the sense of "I don't know how to describe this without it sounding tacky/cliched/fake", but also in the sense of not knowing how I feel about particular subjects. Especially if it's a painful/uncomfortable subject, because I won't want to spend the amount of emotional energy on it, that would allow for complete understanding of my stance on it. I did that even more when I was younger, I think.
So, because I relate so much -- it might be an Fi thing, more than an NF thing.