 Casanova in the 18th century was one of the first reported using " assurance caps " to prevent impregnating his mistresses . 
 Casanova in the 18th century was one of the first reported using " assurance caps " to prevent impregnating his mistresses . 
Casanova in da 18th century was one of tdafirst reported using " assurance caps " to prevent impregnating his mistresses .