look up trellium and what t'pol did with it - and it to her

so clearly not a valid example for general vulcan behavior.
Nothing in ENT S3 established that sex outside of
pon farr was a symptom of Trellium-D usage. T'Pol having difficulty suppressing her emotions is not the same thing. It is entirely plausible -- in fact, it is
far more realistic -- to assume that Vulcans do, indeed, have sex outside of
pon farr when they are with someone whom they trust, and that the symptom of Trellium-D usage was T'Pol having trouble suppressing her feelings for Trip, not T'Pol choosing to have sex per se.
simply answer this: how many vulcans did snw show so far, and what is their explicitly stated situation?
So far, SNW has, that I can recall, depicting Spock; T'Pring; the waiter at the restaurant where T'Pring proposed to Spock; a number of T'Pring's subordinates at her job; a number of incarcerated Vulcans undergoing rehabilitation; the
V'tosh ka'tur whom Spock apprehended while in T'Pring's body; Stonn; and Sybok.
Of these Vulcans, we only have information about the sex lives of Spock, T'Pring, and Sybok. Spock and T'Pring appear to be in a committed monogamous relationship and are engaged to marry, and we know that they regularly engage in sexual intimacy. We have also learned that Sybok was apparently in a relationship with Angel, implying that they were likely sexually intimate at least once.
Also:
You gonna explain to me how it is Sarek's marriages to Amanda and to Perrin survived without non-
pon farr sexual intimacy? C'mon, man. Even if you can buy the idea that an entire species only has sex every seven years or so, are you really gonna tell me two different Human women stayed married to Sarek when he would be unable or unwilling to express sexual intimacy except every seven years?