Any third person may make a donation inter vivos in contemplation of a prospective marriage in accordance with the provisions of this Chapter. Such a donation shall be governed by the rules applicable to donations inter vivos in general, including the rules pertaining to the reduction of donations that exceed the disposable portion, but only insofar as those general rules are not modified by the following Articles.
A donation inter vivos by a third person in contemplation of a prospective marriage that is not made in accordance with the provisions of this Chapter shall be governed solely by the rules applicable to donations inter vivos in general.
La. C.C. § 1734