Wis. Stat. § 768.06: Actions for recovery of property procured by fraud; corroboration required.

Actions for the recovery of property received by one party from the other after the alleged contract to marry and before the breach thereof, which was procured by such party by his or her fraud in representing to the other that he or she intended to marry the other and not to breach the contract to marry, are not barred by this chapter; but such actions must be commenced within the time provided by s. 893.41 or be barred. The cause must be shown by affirmative proof aside from the testimony of the party seeking the recovery.