But then there is that pesky "...forsaking all others." thingy in the marriage vows. That make oral...not OK...outside the marriage.
So-called oral sex is indeed not sex. Hill’s Billy told the truth for once, though for corrupt reasons.
Sex is inherently tied to reproduction, even if it is not specifically (in a particular instance) reproductive.
That is why there is absolutely no such thing as homosexuality; it is, rather, homoeroticism.
A woman cannot conceive from “oral”; it is not sex. It is, however, deeply and personally erotic.
Therefore, any adult seducing a minor this way has committed a moral as well as legal crime.
Therefore, any man or woman engaging in such an intimate act with a non-spouse has violated his/her vows.