Yes, every act of sex, from making out to orgasm, is involved with the throughput of non-Dopamine neurotransmitters, like Serotonin and more importantly Norepinephrine, which is causally linked to a qualitative type of happiness described as elation [1], euphoria etc. Besides, the act of sex and love (or rather, maybe i should say over here lust) may seem causally associated with increased throughput of the neurotransmitter Dopamine, which is also behind a lesser (quantitative) type of happiness more accurately referred to as “pleasure”.
True happiness cannot be maintained as it is only in the moment so the answer to the question is no
Contentment however can and that is not conditional on sex at all as I am both content and celibate
the term “Pleasure”, as classically understood, is more linked to Dopamine, whose activity causes quantum bursts of pleasure
At least that’s what the shrinks used to say. But they were wrong too, I find that it is a quantitative type of pleasure is what dopamine is linked to. As opposed to the other qualitative type of pleasure that we speak of next:
the term happiness, on the other hand, is similar to the term elation and is more linked to Norepinephrine (also look up “anandamide”, which is a part of this Norepinephrine/endocannabinoid-anandamide complex, as one may call it)
Then, they clearly not doing it right.
For men, as well as women, sex as part of an affectionate, trusting relationship, can be extremely rewarding.
Far beyond mere pleasure and well on the way to happiness.
Most healthy people don’t portion out their activities, one to each interpersonal relationship: football with this friend, validation from that one,
playing chess with him, studying with her, jogging with this one, sex with that one…