"You were the missing piece to my puzzle." - Y/n Wolfhard Y/n Wolfhard, the younger sister of Finn Wolfhard. Y/n one day, decided to go with her brother on set. Finn surprises his sister by, getting her an audition. While on set, Y/n unexpectedly falls in love with her brother's co-star. Y/n and Millie, instantly hit it off, when they met. They slowly became best friends, and Millie became a regular on Y/n's youtube channel. Eventually, they started to get shipped by fans. After they kiss at the season 3 premiere after party, rumors spread about them dating. Can they manage to keep it a secret without being broken apart? Millie x Fem! Reader Social Media & Irl