One Day in December by Josie Silver.
From the descriptions of the book to the picture. I give the people from the book a face. Have fun.
Briefly to the content: The protagonist, Laurie, meets Jack at a bus stop, it was love at first sight, but they've lost each other. Laurie searched for him for a whole year until she found him at some point. But that's not how she had imagined it...
Character:
Protagonist and Jack´s Girlfriend




Best Friend of the Protagonist




Protagonist and Laurie´s Boyfriend




Laurie´s Ex-Friend




Sarah´s Boyfriend




Thanks for reading
XOXO SasiToGo