add_adulterer_trait_or_nothing_effect

add_adulterer_trait_or_nothing_effect = {
	save_scope_as = adulterer_check
	if = {
		limit = { is_available_quick = { advanced_ruler = yes } }
		if = {
			limit = { is_male = yes }
			if = {
				limit = { NOT = { knows_doctrine = doctrine_adultery_men_accepted } }
				add_known_doctrine = doctrine_adultery_men_accepted
			}
		}
		else = {
			if = {
				limit = { NOT = { knows_doctrine = doctrine_adultery_women_accepted } }
				add_known_doctrine = doctrine_adultery_women_accepted
			}
		}
	}
	if = {
		limit = {
			is_married = yes
			trait_is_shunned_or_criminal_in_my_or_lieges_rite_trigger = { TRAIT = trait:adulterer GENDER_CHARACTER = scope:adulterer_check }
		}
		add_trait_force_tooltip = adulterer
		shunned_or_criminal_sf_impact_effect = { TRAIT = trait:adulterer }
	}
}

As written in game/common/scripted_effects/00_secret_effects.txt.