My ENFP boyfriend has this magic power...he has incredible intuitions about people, especialy when it comes to their true essence and the things they are hiding, while I'm better at interpreting the meaning of more superficial layers of social behaviour. Also, I can be as dumb as fuck when it comes to trusting people because I always believe in the best in them, and I put too much weight on external appearances and signs...so having someone strong in Fi in these situations can be a true blessing!