Original: Ferrando is less successful with Fiordiligi ( Ferrando 's aria : Ah , lo veggio -- '' Ah , I see it , '' and Fiordiligi 's aria : Per pietÃ , ben mio , perdona -- '' Please , my beloved , forgive '' ) , so he is enraged when he later finds out from Guglielmo that the medallion with his portrait has been so quickly given away to a new lover .
Simplified: Ferrando is less successful with Fiordiligi , so he is angry when he later finds out from Guglielmo that the medallion with his portrait has been so quickly given away to a new lover .