(1) If the spouse who manages the common matrimonial property promises or grants an advancement to a joint child of the spouses, then as between the spouses that spouse bears the costs of the advancement to the extent that they exceed the degree that is appropriate for the common matrimonial property.
(2) If the spouse who manages the common matrimonial property promises or grants an advancement to a child that is not a child of the spouses, then as between the spouses the father or mother bears the costs of the advancement; for the spouse who does not manage the common matrimonial property, however, this applies only to the extent that they approve or that the advancement does not exceed the degree that is appropriate for the common matrimonial property.