set_relation_lover_through_seduction_effect

set_relation_lover_through_seduction_effect = {
	$CHARACTER$ = { save_scope_as = second_character }
	if = { #To save a potential important object to be used later on
		limit = {
			exists = scope:scheme
			scope:scheme = { has_variable = object_of_importance }
			NOT = { has_variable_list = lover_object_of_importance }
		}
		add_to_variable_list = {
			name = lover_object_of_importance
			target = scope:scheme.var:object_of_importance
		}
		add_to_variable_list = {
			name = lover_object_of_importance
			target = scope:second_character
		}
	}
	else_if = { #you can save two different seduction objects
		limit = {
			exists = scope:scheme
			scope:scheme = { has_variable = object_of_importance }
			has_variable_list = lover_object_of_importance
			NOT = { has_variable_list = lover_object_of_importance_2 }
		}
		add_to_variable_list = {
			name = lover_object_of_importance_2
			target = scope:scheme.var:object_of_importance
		}
		add_to_variable_list = {
			name = lover_object_of_importance_2
			target = scope:second_character
		}
	}
	scope:scheme = {
		end_scheme = yes
	}
	if = { # Safeguard because so much stuff can happen
		limit = {
			NOT = { has_relation_lover = scope:second_character }
		}
		scope:second_character = {
			set_relation_lover = {
				target = prev
				reason = $REASON$
				province = $LOCATION$
			}
		}
	}
}

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