Shouldn't friendship be the base of love in the first place? To me that's something good, common sense, and not necessarily socionics-relevant.
It truly should be.
But being intimate with someone who is just like you would give a whole new meaning to the phrase 'Go fuck yourself'.
That being said, you can perfectly be friends with someone who's not a 3D-printer-copy of yourself.
“I want the following word: splendor, splendor is fruit in all its succulence, fruit without sadness. I want vast distances. My savage intuition of myself.”
― Clarice Lispector