The Mayor wants a virgin, we'll give him a virgin

"It"s all right" I decided, giving Olivia a brief hug to cheer her up. "The Mayor wants a virgin, we'll give him a virgin."
"But how?" asked Olivia, staring at me with wide eyes.
"There'll be a big party, did you say? Then, we'll get the Mayor decently drunk, so that when he'll enter his bedroom, he won't even be able to tell whom he's sleeping with. Meanwhile, we'll have replaced Gabriella by another woman... still a virgin, this one. Thus, the Mayor bangs his little virgin, gets into a drunk sleep, and in the morning we discreetly get the other woman out of the room and Gabriella in."
"It sounds great," Olivia said, her tears dried and her face brightening. "We'll even be able to do the morning ceremony, get the sheets with virginal blood on them, wave them through the street and all."
"By all infernal gods!" I said to myself with a wry face. "To think that they do this disgusting ceremony in Tarraco, too!" Anyway, I continued to Olivia :
"After that, the Mayor will be enabled to screw Gabriella as many times as it'll be necessary to make her bear his child - supposed I didn't already plant one into her."
Gabriella looked delighted at the idea.
"The only thing is that we've got to find a virgin before tonight," Olivia said, while a buxom dark haired girl entered the bathroom. I guessed she was Martha, the second servant.