Am tired and (forgivably) drunk, so will respond more fully later. The only thing I'll say now is this: either you INF types are intuitive, so you KNOW what you're doing to us poor helpless Thinking types, or you aren't, in which case nobody knows what we're doing here ;-)what happens when an intj picks up the pieces and moves on? how do they do it and what is their thought/feeling process when they start to get it?
also, i identify with everything orangeappled said, although i don't know why (since i'm infj).
i sometimes find that i want someone who can perfectly manage my emotions for me, inspire me when i need it, comfort me when i need it, and challenge/tough love me when i need it. my Fness creates a desire for connection more than anything else, which sometimes feels like a desire for merging. without it i feel empty, plain, colorless, bland and tasteless, bored, unmotivated, uninspired, flat, etc. i'm introverted, but one of my greatest joys is in expressing myself and relating holistically as selves to another person. emotional articulation is different than logical articulation, although aesthetics grow out of both structures. i think nf types often have a strong calling or pull to a better possibility of emotional relationality, whereas nt types do T analysis first than start letting F wake up a little bit. when intjs do it 100% it is sudden and total. as an infj i feel like i am always holding some of it back, my N is looking forward to negative projections and positive other possibilities (feeling deprived). i am figuring out how this works as a result, bc these processes only distract from the fact that i am currently VERY happy in this situation when i am free and open. i am still young in significant relationships tho i am sometimes wise in my sneaking suspicions (for good and bad). i envy Fi users bc they seem so much more in touch with their actual personal values, whereas i often feel incapable of measuring accurately. their personal values measured in pain and in pleasure provide a yardstick for the cost of experiences. intjs grow out of extremely sensitive children, their inability to easily cope with Fi fallout is what creates their hard outer casing. just like infj wants and tries to act emotionless to hide the inner turmoil from others, and the huge sway of feeling, emotion, investment, care, and attention that emerges out of us when others are nearby and interact with us.
i think some good points were brought up about how F folks who practice, especially Fi users, get some insulation bc they spend so much time feeling EVERYTHING. they are skilled, their overall emotional game is well developed, and they have emotional energies invested in many many directions that can adjust and get new emotional balance. intjs have far less investment in this area, have less solid foundation and anchorage, so the total disappearance once it spikes and supernovas tastes like death/dirt.