What I didn't understand was what caused Spock to be "cured" of his Pon'Farr condition. While on Vulcan, Spock didn't have sex with T'Pring, or anyone else for that matter. I don't recall Spock even making any physical contact with T'Pring. Yet by the end of the episode, Spock was back to normal.
Excellent question...... that I try to never think about.