This Sleeping Beauty didn't want reawakening

Helen was horrified! She'd just met her fiance's brother, celebrated author Alexander Knight—who'd revealed to her that, five years ago, they'd shared one searingly passionate night together. And Helen had no recollection of it whatsoever! Alexander had written a bestselling novel based on that blazing night, portraying Helen as his "angel." And now he was determined to win his luminous angel back. But Helen refused to betray her loving fiance, Greg, for the sake of a phantom past. Yet something about Alexander aroused disturbingly real sensations in her.