Liz and Nirpal seem like opposites. They are, in many ways, but the glue that keeps them together is that they need each other.
Liz is a former anorexic fashionista who adores her cats. She's a vegetarian. Her anal-retentive tendencies (to which she fully admits) grate after a while, as do the obsessive details about beauty products used/ bedlinen bought etc. But it's essential to help you get a feel for her character. But contrary to how other readers have described her in other reviews, she doesn't come across as "mad". A bit eccentric, perhaps, but her kind heart and longing for love are every bit as normal and ordinary as those of any woman, and that's what so many people who read her column can relate to.
Moving on to The Husband, I had expected to resent Nirpal, based on an interview he did about being "the most hated guy in the UK" and on other stuff he's written (and also on comments about him on British Asian websites).
Instead, I found a very complex rendering of a very real man. He loves his wife, but feels trapped in marriage. He can be callous to her emotional needs (he seems to despise anything sentimental, having had a tough upbringing). But he's also gentle to her cats, inconsolable when his friend dies, etc.
They are both flawed people who, somehow, need each other. Their relationship seems like fiction, but the dynamics are so human.
I wholeheartedly recommend this book. And, at the risk of sounding like Jerry Springer's Final Word I wish both of them the best of luck in the choices they end up making.