I've just finished this book for my senior seminar class at a private college and, let me tell you, if it were 'sex scene after sex scene' I don't think we would be reading it.
The novel is broken into sections and each section sheds new light on the characters involved, their struggles, anxieties, and strife. I personally feel that this book, though I would never have bought it if I hadn't needed it for class, was a great read. The first section was a little slow paced, but the novel really picks up after that.
Bloom is really a brilliant author and really has a way with character creation.
Give it a chance. You won't be disappointed.