The Unhoneymooners, written by Christina Lauren, is a hilarious celebrity romance novel that will make you laugh out loud. It tells the story of Olive Torres, who reluctantly agrees to go on her twin sister's honeymoon after everyone else at the wedding falls ill from food poisoning. The catch? She has to share the trip with Ethan Thomas, the best man and her sworn enemy. As they navigate awkward situations and unexpected adventures, Olive and Ethan start to realize that they might not hate each other as much as they thought. This book is a perfect blend of enemies-to-lovers romance and laugh-out-loud comedy.