Affectionately, MB [XO, Kitty]

After a terrible divorce, Madaline Bernice O'Conner, or Addie, lands the job of her dreams: going to South Korea to be a part of the production the hit Netflix series "XO, Kitty." When she gets there, she's met with the stunning city of Seoul as well as the stunning actors for the show, mainly her favorite--Lee Sang Heon, the guy who plays Minho in the show. She had a crush on him as she watched the first season as well as his other show he was in, and it all helped her through her nasty separation with her husband. But she's too shy to say so to Sang Heon's face after she meets him. She starts sending him anonymous messages on Instagram, always signed, "Affectionately, MB," and the two start conversing back and forth. This soon becomes the top story among the cast and crew, and it starts to get into the city and even international news. Who could MB be? No on suspects Addie since she doesn't go by her full name.