Sorry to go off on one, but ...
Watchtower: "Thus, a mate’s enforcing perverted acts, such as oral or anal sex, within the marriage … "
^^^ Would be rape (enforcing).
WTF is wrong with the WTS? Jeez!
Any sexual act that is forced or enforced is rape/abuse/coercion.
Adult couples (married or not) can decide for themselves what they want to do in private.
They don't need advice from a group of elderly men who probably aren't getting any, lol.