Aftershocks by Catherine Coulter. Actually, the trade paperback cover is prettier.
My favourite part? When George -- short for Georgina, the Heroine -- faked a skiing accident that left Dr. Eillot Mallory -- age 38, 15 years older than George -- seriously horrified. But upon realising that he's tricked, he became a caveman and then they had violent sex.
Loved it.