From Goodreads.com:
Six responsible adults. Three cute kids. One small dog. It’s just a normal weekend. What could possibly go wrong?

Sam and Clementine have a wonderful, albeit, busy life: they have two little girls, Sam has just started a new dream job, and Clementine, a cellist, is busy preparing for the audition of a lifetime. If there’s anything they can count on, it’s each other.

Clementine and Erika are each other’s oldest friends. A single look between them can convey an entire conversation. But theirs is a complicated relationship, so when Erika mentions a last minute invitation to a barbecue with her neighbors, Tiffany and Vid, Clementine and Sam don’t hesitate. Having Tiffany and Vid’s larger than life personalities there will be a welcome respite.

Two months later, it won’t stop raining, and Clementine and Sam can’t stop asking themselves the question: What if we hadn’t gone?

In Truly Madly Guilty, Liane Moriarty takes on the foundations of our lives: marriage, sex, parenthood, and friendship. She shows how guilt can expose the fault lines in the most seemingly strong relationships, how what we don’t say can be more powerful than what we do, and how sometimes it is the most innocent of moments that can do the greatest harm.

My review:
This is the 4th book by Liane Moriarty that I’ve read and once again, she didn’t disappoint overall.

My first reaction after finishing the book? Whew! Like many other readers have noted, it took a while for things to take off and get interesting, but once you hit that point in the book it was hard for me to stop reading! The flash-forwards and flashbacks made me constantly scream inside my head, “WHAT HAPPENED?!!??” And then when it did my heart dropped and well, you’ll just have to read the book to figure out why.

This book also tugged at the heartstrings a little bit and makes you really think about people’s behaviours – a “don’t judge a book by its cover” sort of situation. It also made me think of how friendships are made and slowly evolve over time, changing as we do.

While I didn’t really connect with any of the characters they were still relatively likeable, although I would’ve liked more background on why Clementine decided she needed to do those talks of hers … the rest of the story could’ve went on without that part.

Still, I’m giving Truly Madly Guilty 4 stars out of 5. If you have the patience to get through the first half of the book it’s definitely worth picking up!