Fla. Stat. § 741.10
When any marriage is or has been solemnized by any of the persons named in s. 741.07, and such person has not made a certificate thereof on the marriage license as required by s. 741.08, or when the marriage license has been lost, or when by reason of death or other cause the proper certificate cannot be obtained, the marriage may be proved by affidavit before any officer authorized to administer oaths made by two competent witnesses who were present and saw the marriage ceremony performed, which affidavit may be filed and recorded in the office of the county court judge or clerk of the circuit court from which the marriage license issued, with the same force and effect as in cases in which the proper certificate has been made, returned and recorded.
Fla. Stat. § 741.10