Sec. 16.3. (a) This section applies to a surviving spouse of an employee beneficiary who:
(1) died before July 1, 2005; and
(2) was a member of a retirement plan established under section 12 of this chapter.
(b) A monthly pension paid under section 16(c) of this chapter, before its amendment by P.L.97-2005, to a surviving spouse after the date the surviving spouse remarried and before July 1, 2005, shall be treated as properly paid.
(c) The monthly pension of a surviving spouse:
(1) who remarried after December 31, 1989; and
(2) whose monthly pension paid under section 16(c) of this chapter, before its amendment by P.L.97-2005, ceased on the date of remarriage;
shall be reinstated on July 1, 2005, under section 16 of this chapter, as amended by P.L.97-2005, and continue during the life of the surviving spouse.