An Elusive Mistress (1986)

Not that I care! she tried to tell herself At nineteen, Hillary had been a little girl trying to keep up with a husband light years ahead of her. When the marriage ended, she built a wall around the memory of Clive Eastman. Six years later, Hillary had grown up. She had made a name as Brisbane's foremost interior designer, and she had found a man she thought she could share her life with. Then Clive returned. And one chance meeting was all it took to reawaken feelings Hillary thought she'd succeeded in hiding.