Fe dual seeking does NOT equal "liking to have your private space invaded". If you read the descriptions of INTj-ESFj dual interaction you'll notice that it is the ESFj that begins to fuss about things that are important to her/him
in the proximity of the INTj, to which the INTj reacts by taking the initiative in communication. I've been in this kind of situation, and I can tell you the behavior of the alpha SF has to be perfectly right or the INTj's reaction will be cold and uncaring. ESFj DON'T force themselves into the life of INTj's. They're just "around" in a way that the INTj can't ignore. Also keep in mind INTj's are known for being reclusive, secretive and silent. Ti/Fe interaction works in very, very unobvious ways.