In the Star Trek: The Original Series episode "Amok Time," Spock starts to experience the "Pon Farr." This is the once-every-seven-years mating period. It is strongly hinted here (and in other Star Trek canon) that Pon Farr is the only time Vulcans mate.
Also, in "Amok Time," Spock explains that his marriage to T'Pring was arranged (I watched the episode on Paramount+ to confirm this). In that episode he says to Kirk and McCoy that the wedding was "By our parents arrangement when we were but seven years of age."
Yet, in Star Trek: Strange New Worlds, T'Pring asks Spock to marry him (not have the marriage arranged) and they go off to celebrate by having sex. That is, mating. Like humans. Not Vulcans. (The sex is interrupted before it gets started by Captain Pike calling.)
I haven't seen today's episode yet, so I have no comment on it.
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