No longer forbidden?

the long version

"Rowan O'Brien will always be the thorn in Nic Marcussen's side. She was the only woman to tempt him beyond his steely control ... the only woman strictly forbidden to him. Years later, Nic's sole focus is business - the boy who grew up under a cloud of shame now has the world at his feet. Until tragedy brings Rowan back into his life and his façade begins to crack. In the seclusion of the Marcussen mansion in the Mediterranean their deeply buried secrets surface and they are forced to confront their darkest desires!"--Publisher description.