Sleeping Arrangements by Madeleine Wickham
You may know this author better by her pen name: Sophie Kinsella, author of the Shopaholic series, who this time is writing under her real name.
Chloe and Phillip and their two sons, and Hugh and Amanda and their two daughters, find they have been double-booked at a villa in Spain by their friend Gerard, who is doing a bit of scheming of his own to crash everyone together for one holiday week. What know one knows is that Chloe and Hugh have a past...a past that isn't entirely past for either of them...
This book just flowed so easily, and took no time to read, as I was eager to see "will they, won't they, who said, they what?!" throughout the reading. This had its funny bits, its tender bits, and its car crash bits, but all of it just WORKED. The ending is, and is not, what I expected, but I enjoyed every page.
This is just a nice, simple, easy, fast read - highly recommended!