The two began arguing on August 14 after Bieber threatened to make his page private if his fans continued to post mean comments about his rumoured new flame Sofia Richie.
Responding to this, Selena Gomez asked him to stop posting photos of the 17-year-old model and stop blaming his fans.
“If you can’t handle the hate then stop posting pictures of your girlfriend lol. It should be special between you two only. Don’t be mad at your fans. They love you,” Selena Gomez wrote in the comment section before deleting it.
Later, Justin Bieber appeared to diss her as he commented on his own post, “It’s funny to see people that used me for attention and still try to point the finger this way.”
In another comment, the Hands to Myself singer then revealed that her ex-boyfriend cheated on her multiple times when they were still dating.
“Funny how the ones that cheated multiple times, are pointing the finger at the ones that were forgiving and supportive,” she wrote. “No wonder fans are mad. Sad. All love.”
Justin Bieber and Selena Gomez dated on and off for years before splitting in 2014. This feud is particularly upsetting for Gomez-Bieber shippers, who hoped to see them get back together.