No, you're an ENTP. I only met ya once and I can't say I really pay attention to individual peoples posts but you seemed to like to play devil's advocate a lot.
While you're pretty reticent and unexpressive, I think you appreciated a few of my jokes in a way that a person with Fe and not Fi would. Shit, I can't even remember what I said but you laughed pretty hard. We ENFJ's are always looking for a way to get emotional rises out of people. I find Fi people to be a tough crowd.
You asked a lot of questions using Ne and I believe Ti, from the way you navigated the convo and pieced together my beliefs. Then you used Fe to make sure that you weren't annoying me with those questions . Being considerate is much more an Fe thing (Fi is about integrity.)
Also, that time you helped the people get a photo with both of them in it, I feel, shows that you're outwardly attentive to people.
"... you think deeply about stuff [that] nobody cares about and hardly anybody can understand you." ~ Peguy talking about Ni users. So true.