The Unhoneymooners by Christina Lauren
It’s trouble in paradise for sworn enemies Olive and Ethan, who find themselves in Maui after a bad case of food poisoning leaves the original honeymooners – Olive’s sister and Ethan’s brother – unable to travel. But to enjoy a free 10-day Hawaiian vacation, they’ll need to pretend to be madly in love…which, as it turns out, isn’t nearly as hard as they originally thought.
“Lauren brilliantly wields familiar rom-com tropes – enemies to lovers, fake marriage, even height differences – to craft a delightful romance that will have readers hanging on every word.” writes Publishers Weekly in a starred review.