Deep in thought, Naeku ignored Leia's sputtering, causing Erik to smirk a little. It wasn't just that Naeku took their conversation seriously, because she did, but their bond also told him about the excitement she felt at this situation.
Specifically, about how they they were treating Leia and what she was doing as background entertainment. He didn't think this had anything to do with Leia specifically, but rather, the situation's nature.
Of course, Erik enjoyed it as well and felt delighted by the progress of Naeku's sexual corruption. Once again, he'd managed to find a pervert for a wife… not that he was any better—his corruption had already been done by Elora.
It took a few more seconds for Erik to finish. By then, he breathed a contented sigh and released Leia's head. Yet, she didn't immediately retreat. Rather she continued looking at him, before slowly pulling back with her lips sealed tight around his flesh.