But a leak of Gomez's new single "Love Will Remember" provides a glimpse of happier times, including a voicemail that sounds like Bieber professing his love to her.
"Hey, Babe, it's me," the message said. "I just want to call and tell you that I love you so, so, so much. I just wanted to let you know that you are my princess. You are worthy of all the love in the world. You are the love of my life."
The song, which Gomez calls the most personal of her album, then takes a turn for a sad story of lost love.
"You said you loved me/I said I loved you back/What happened to that/What happened to that/All your promises/And all them plans we had/What happened to that/What happened to that/Boom gone/We move on/Even if we try to forget/Love will remember."
Gomez, 20, has had a longtime on-and-off relationship with the "Baby" star. The former couple was rumored to have gotten together for the Fourth of July in a photo Bieber posted on Instagram.
The caption for the photo said "#heartbreaker," and the two are reportedly trying to maintain a friendship.