Sherry Thomas said this quote

The explanation for her absence had been staring him in the face all the while, but he hadn’t wanted to acknowledge it: The affair meant nothing to her. He’d been the only one bewitched body and soul. For her, he’d been but a temporary source of entertainment, a way to pass the otherwise tedious hours in the middle of an ocean.He’d been the one to press for a continuation of their affair beyond the voyage. He’d been the one to offer his heart, his hand, his every last secret. She never even gave her real name.And, of course, never showed her face.