(Fem Reader x Mary-Kate Olsen) Spin-off from my first book, On The Inside with Elizabeth Olsen What happens when Mary-Kate Olsen falls for her younger sister's new friend, who Elizabeth is also falling for. #2 marykate 11/23/22 💖 #3 on mkay 11/12/22 💗 #2 marykateolsen 02/06/23 ❤️ #3 on Inside 01/18/23 🤍 #6 on captivating 11/15/22 🤩