When Taylor Swift Cried Over BFF Selena Gomez Facing Abuse During Justin Bieber Relationship! Everyone knows that Taylor Swift was a witness to her BFF Selena Gomez's worst phase during the Justin Bieber relationship. When Taylor Swift Cried Over Selena Gomez’ Relationship With Justin Bieber (PC: Getty Images) Taylor Swift and Selena Gomez have been teenage best friends. Things have drastically changed over the years but their friendship has made it through thick and thin. Everyone knows that the Fearless singer was a witness to her BFF’s worst phase during the Justin Bieber relationship. But do you know, she cried about it? Read on for all the details.