The more lust Roxana felt the more energy Damian could feed off her. All the fatigue that had been lodged in the demon's body since yesterday had simply evaporated after he had sex with Roxana.
They had tried all sorts of different sex positions, but Damian never felt satisfied and wanted to continue eating his Duchess's body without rest. At that time, Damian realized that what he was feeling was not just lust but also obsession.
"This body of yours is truly amazing, Roxie. No, maybe you are the amazing one." Damian thrust his manhood deeper from behind, "You're the first woman who couldn't make me satisfied enough."
In other words, Damian wants to fuck Roxana all the time. He wanted to taste every inch of her body and make his Duchess shiver in pleasure.