This book is about two characters named Tiffy and Leon. Leon is trying to earn more money, and since he is on the nightshift at work, he's out of the house during the night and is out during weekends, so he rents the flat out to Tiffy, who is only there at night and the weekends. But, they share the bed and they've never even met. This book is a dual perspective book and I love how Beth O'Leary made the two characters so different with how they speak. The characters are complete opposites but it works so well. As they get used to the presence of each-other in the flat, they begin to leave post-it notes around the house, as it is how the communicate and they seem to get on very well together. I wasn't sure what to expect with this, but what I did get is a book full of laughter but with serious undertones and some more emotional moments. I read this book so quickly because I became addicted, I just didn't want to stop reading it because I completely loved Leon & Tiffy and multiple other characters and how everyone interacted. It was such a lovely and sweet piece of contemporary fiction and a fantastic debut novel by Beth O'Leary, I just want more and more of her work. This was a very hyped up book but I fully believe that it lived up to that hype and I do really recommend it, especially if you love contemporary books. But be warned, when you pick this up, you may not want to put it down until you've finished it!