I really can't top the back of the book, so I am going to just have to repeat some of it here:
The Love Machine is the story of Robin Stone – a charismatic, brilliant, ruthless man – and of the three women who love him.
Amanda – beautiful and doomed, whose career as a top-flight model is no consolation for her inability to win and hold ROBIN STONE.
Maggie – an ambitious young actress who know what she wants and will settle for nothing less than ROBIN STONE's love.
Judith – aristocratic, rich, married, desperate for love before it's too late, a woman who has everything in the world except the one thing she must have ROBIN STONE.
How can you not go out and read this? It was also made into a movie which I have not seen yet.