There was a full range of emotions attached to the hashtag, with plenty of Beliebers and Directioners supporting the pairing...and others flat out shooting it down.
And then there are the Directioners who, even though they love Harry, called out the fact that Hazza is often singled out and 1D is...you know...a whole band? One fan eloquently put it: "Um no I love Justin so much but it's either ALL THE BOYS or NONE #JustinDoaDuetWithHarryStyles"
Another commented, "#JustinDoaDuetWithHarryStyles how about no. Last time I checked, Harry isn't a solo artist."
Check out some of the other comments - would you want One Direction and Justin to collaborate?
#JustinDoaDuetWithHarryStyles oh please? Pretty pretty please?- please JUSTIN please (@YssaGacita) September 24, 2014
I love Harry but he's from a band and it should be Justin ft 1D #JustinDoaDuetWithHarryStyles- HE FOLLOWED ME (@BieberKindest) September 23, 2014
How bout no...there are FIVE members of One Direction, plus NO #JustinDoADuetWithHarryStyles- HaLo News ツ (@LarryUpdatesAcc) September 23, 2014
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Gallery | One Direction's Instagram: Best of Harry Styles