Julian's Jungle Book by Kate Hofman
In this sequel to Handsome Devil, Ashley, the new personal assistant, is given a vacation to Frangipani Island. Wandering into a tropical forest, she stumbles upon a beautiful, naked man playing in a stream. Ashley isn't quite prepared for the tongue-lasing he gives her for trespassing. She argues back, not realizing the man is the owner of the island! After she makes friend with his Rottweiler, he has a change of heart and apologizes. Later at dinner, she and Julian hit if off. They share and exciting, passionate time while she is on the island. She returns to Manhattan with fond memories and a little something extra. Very soon she discovers she's pregnant, and writes Julian, but the letter goes astray. He seems to be unreachable, no matter what she does. What will he do when he finds out? Will the ever reunite?