I would like to make the case that having strong Fi does not necessarily mean that you easily recognize your own feelings for other people.
I used to struggle with feeling like I don't actually love my brother, despite having a healthy, comfortable, albeit distant relationship with him. I thought it must be some fucked up SX-blind thing.
Feeling very guilty about it, I brought it up to my mother, ESI SP/SX, and she admitted that it took her years after marriage to realize that she loved my father. My father, a logical type, knew he loved her very soon.
Following in her footsteps, I've been very slow in realizing how I feel towards my boyfriend. In this aspect I lag far behind him, and like my father, he is also a logical type. Are logical types slightly less daft than ethical types in this regard?
Rationally, I figured I liked him to some extent since I couldn't bring myself to prevent the progression of the relationship (excepting at the beginning, when I friendzoned him once, then refriendzoned him..), but it took a while to feel it, you know? I still get the strange impression that I don't quite realize the extent of my feelings towards him. (So I try not to overthink it and to trust my actions more than my thoughts/feelings.) (which is a funny thing for an e4 to try and do)
Has any Fi ego also observed this seemingly paradoxical ethical slowness within themselves?