No wonder romance in other media feels dull.
Theirs is simply much more than that. 'romance' is an unfitting term for them. Spock felt Kirk's conscience from Gol, of all places.
The poets of old would have written much about them.
Picture taken from a TMP novelization copy, with a picture of TMP Kirk right next to it (the book was bound like that and the pictures are gorgeous). Might be coincidental, might not be.
Edit: Roddenberry's DELIBERATE decision to create a Vulcan term which he specifically used in this book was bold and telling, especially as it was used for the very first time to describe Kirk and Spock's bond. ''Screw censorship, I will get the gayness across no matter what," he might have thought. ''Let's give 'em fans some candy, but let's make it almost subtle.''
Almost.
Also, props to Shatner for making Kirk even more in gay love with Spock than Roddenberry's. Peak acting choice.
TMP might be my second favorite Trek movie of all time. While I do find immense delight in the Enterprise sensual sequences -- Scotty would be proud, the shift in dynamics between Kirk and Spock within the paradigm of their wrecked relationship hits deep. Many a one has published well-documented, detailed studies of their whole story from TOS, so I shall not elaborate on that further, as their works explain it all infinitely better than I ever could.
Ramble over.