The 42-year-old producer - real name Thomas Wesley Pentz - has shared an apparent text message exchange between himself and the "Believe" hitmaker from 2017, in which he was told he'd reached out to the wrong person.
The TikTok video showed Diplo's text read, "Yo biebs, it's Wes! Was dope linking with you last night."
The person responded, "Hey this isn't 'biebs.' I Think someone gave you the wrong number, Sorry."
Diplo simply replied, "Damn."
But four years later, Diplo received a text from the same number, which read, "Hey it's Justin. did you get those vocals I sent over the other day?"
Fortunately the producer - who has collaborated with Justin on tracks such as "Where Are U Now" and "Cold Water" - saw the funny side of the exchange.
He captioned the video, "At least I wasn't ghosted.(sic)"
In a 2019 interview, four years after the duo released "Where Are U Now", Diplo revealed he was actually warned not to work with the "One Less Lonely Girl" hitmaker. Despite being told working with Bieber could potentially ruin his career, he went ahead with the collaboration and the single went on to rule Billboard Hot Dance/Electronic Songs.
"At one point Justin was one of the most unpopular artists. But we thought, the music's going to cut through all of this, if we make something crazy and loud. And that's what we did," Diplo said.