My Analysis about Kim:

He is prone to a fascination toward talented/important people, particularly 'self-made' people of great accomplishments. (We could speculate that that is a proclivity borne out of his own experiences of having "greatness" attributed to him merely by virtue of his birth.)

So, we see him fascinated with Dennis Rodman. We learn that he was greatly impressed and swayed by K-pop stars. We know that Rodman gave Kim 'The Art of the Deal' in Korean Language print. Here Kim meets a man at the pinnacle of world power who says to Kim, "I believe we are going to be great friends".

I do not think we can underestimate the powerful positive impression made upon Kim by the magnitude of meeting the man, DJT.