He may use many methods to obtain what he desired. One of them being the services of a certain Doctor that is under his payroll. Pantalone knew no matter how much he was worth, even his vast amounts of Mora couldn’t convince you to love him. So he was only left with one way; by any means necessary.
Pantalone had the doctor make just the right portion that would suffice. He had the drink delivered to you in your own residence, as he had the keys to access it. The doctor had warned him not to expect too much of a reaction from drinking it once alone with you, but he needed to take the chance anyway.
Pantalone had arranged for a romantic candlelit setting, which was his way of persuading you just enough. He had waited for you to come home that day.