That's certainly implied, though a gentleman doesn't kiss and tell...
That and the flirtation between them in "The Man Trap" and "Charlie X." The reboot relationship didn't come out of nowhere. There was clearly something being set up between Spock and Uhura in the early first season, but it was presumably kiboshed due to the censors' fear of an interracial romance (they couldn't care less about interspecies romance as long as the actors were white).
But, but Spock is not a gentleman he is Vulcan!


When is the Next Rise of the Federation book coming out... I miss that series.
(I'm on Kindle to buy your Ex machina story..think of me when you spend your royalties lol)