"S--"?! I think you're trying to say "sex," right?There was an old website that analyzed this and found that the only woman Kirk ever actually had s-- with in TOS was Deela from Wink of an Eye, after she more or less coerced him I think? I can't find the website now.
It's definitely more than just one. Off hand, there's the slave girl in Bread and Circuses. There's Deela and the "native America" Miramee. You've got to think he did it with Marlena in the Mirror Universe.
But, yeah, it's not quite the list of conquests that is usually assumed!