The social media saga started after Justin posted photos of his new girlfriend Sofia Richie which got some abusive reactions from his Fans.
Following the Fans reaction, he threatened to make his Instagram account private.
Selena Gomez commented below the picture at the weekend telling him to stop posting photos of his girlfriend if he didn't want a backlash.
"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 and supported you before any one ever did." - Selena wrote.
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Justin hit back with a cryptic message which seemed to suggest that the US singer had used him to become famous.
"It's funny to see people that used me for attention and still try to point the finger this way," he wrote. "Sad. All love."
Selena Gomez responded after few mins. "Funny how the ones that cheated multiple times, are pointing the finger at the ones that were forgiving and supportive, no wonder fans are mad. Sad. All love." - She wrote.
it can be recalled that Justin Bieber and Selena Gomez had an on-and-off relationship from 2011 until they finally split up in 2014