Times change - Nora roberts

Enlightened twentieth century female Sunny Stone had always considered herself a with-it person. Yet form the moment devastatingly attractive Jacob Hornblower appeared on the doorstep of her cozy mountain retreat, she'd been feeling positively spaced-out! Truth was, something about her unexpected cabin guest seemed…not quite of this world. But his rugged masculinity was real enough and so was the passion that soon flowed between them.
Bewitching, irresistible Sunny enticed Jacob as no other woman ever had. Trouble was, their timing was off--by about three hundred years! Once Sunny discovered that her eccentric space scientist was really a traveler from another century, would their love be strong enough to stand the ultimate test of time?