The book is divided into 7 sections, each with a different narrator (though some people narrate more than one section). This allows the nice effect of getting to hear different sides of the story, and when done well, allows you to see how people misunderstand each other, and the effects such misunderstandings have. It's a move I'm generally partial too, but its a tricky thing to pull off well, and most authors (and Perlman is an excellent example) who attempt it are so pleased with their own cleverness that they botch the whole thing. Perlman clearly wants to play with the idea of ambiguities in personal relationships - aside from being the title of the book, he makes his various characters talk about it so much that after awhile you're like DUDE. I GET IT. YOU'RE VERY CLEVER. It's kind of amusing, actually, that Perlman clearly thinks he's being incredibly smart by accenting this multiple perspectives story with literary theories of ambiguity, but the book fails precisely because he's unable to leave anything ambiguous - not only does he have to keep calling attention to just how clever he is, but he also insists on ultimately getting every character's perspective on everything, and telling you just what happens to pretty much everybody.
The real problem, though, is that if you want to be a virtuoso and have seven different narrators, fine, but they have to actually be different. They can't all sound like a slightly angsty, melodramatic, intelligent but vaguely pretentious, self-absorbed guy. This is really why my ardour for the text cooled after the first section. I liked the first narrator. Sure, he dropped a lot of literary references in a vaguely pretentious way, but hey, I'm a lit dork, so I didn't really mind. The second narrator was somewhat similar, but not overly so - he actually, kind of, had a personality of his own. And he's probably the most effective character, in that he is frequently completely misperceived by others, but actually becomes likeable when you get his perspective. Though given how very likeable he is from the inside, it is a bit hard to understand how he can be so detestable to most everyone else. But after that, all of the narrators are basically similar. The female characters are particularly disastrous - their voices ring so false, it's painful. All of the characters are slightly ridiculous, "literary" types who have ridiculously eloquent conversations and thoughts, and unbearably poignant lives (it's the textual equivalent of the kind of performance in movies that makes my friend Jen assume a stiff posture and yell ACTING! in a booming voice), but the women, for me, were even worse. Although I generally believe that gender identity is a social construct rather than a biological one, and I don't think it's true that a man cannot write in the voice of a convincing female character, Elliot Perlman can't. But that's mostly because, it seems to me, Elliot Perlman can't really write ANY convincing character other than a self-absorbed, angst-ridden, over-sensitive pseudo-intellectual one, or at least, not in this book he can't. But for some reason, it's when he tries to speak as a woman that this becomes so starkly clear. I suppose there is a kind of masculinity to a certain sort of self-absorbed melancholy. It's not that women aren't self-absorbed or depressed, it's just that they tend to do it in a slightly different way. And his women are clearly products of that kind of male imagination. I ain't sayin', I'm just sayin'. I have a sneaking suspicion that the author of this book might be kind of an annoying guy.
All of this is very unfortunate, because actually, the story is quite interesting. Is it so interesting that it's worth 623 pages? Well... hard to say. I can't unabashedly recommend it, but I can't also say it's a waste of time. There are plenty of worse books out there. All the same, there are so many better ones...