Two Teen Book Lovers discussion

I read this book about a week ago and I loved it. This book is a fake dating trope, which i love. Throughout the book they are fake dating and slowly they go from being strangers to lovers. Olive's friend pushes them out of their comfort zone to do couplie things they don't want to do (the friend doesn't know it's all fake). In the end something happens to her, and lover boy goes all protective and starts threating his friend. It's a love story between two scientist and I loved the book.