The episode title is almost certainly drawn from Douglas Hofstadter’s book _Godel, Escher, Bach: An Eternal Golden Braid_, which has an interlude called The Mind’s I. It features The Well-Tempered Clavier and covers the nature of intelligence, recursive loops, phonographs, etc. All these elements are referred to…

Obi-wan was clearly shown to have romantic feelings for someone during the Clone Wars series, so it’s not unimaginable that he would have a relationship during the twenty years between episodes III and IV.