Unexpected {5SOS}

2009, 13 year old Bella Smith, 13 year old Lucas Hemmings, 14 year olds Michael Clifford and Calum Hood, and 15 year old Ashton Irwin. Bella's best friends with Luke, Calum and Michael for already 3 years. They live in Australia. She loves them, and the boys developed feelings for her. But then 5 months after her birthday, march 31, she moves to Los Angeles. Where she meets Ashton and sorta loses contact with the boys. She and Ashton also become best friends, but then her mother dies and she moves to New York where her father lives.
Then years later, 2014, when the band [5sos] is formed. Bella reunites with the boys, but she wears wigs and stuff so the boys don't notice her. She now also has a best friend, Lilac, who ends up with Michael.