One Direction, Justin Bieber fans support each other amid collaboration rumours

Justin Bieber may have lit up the big screen in his 3D concert film "Never Say Never," but now he's all about 1D -- that is, boy band sensation One Direction.

Canada's "Boyfriend" set the social networking world alight early this morning after hanging out with the British singing group last night -- causing the term "Justin and 1D" to trend on Twitter this morning.

"In the studio with our boy @justinbieber last night, its gonna sound great!" One Direction member Niall Horan tweeted enigmatically around midnight.

Later, the Biebz also retweeted a message from band mate Liam Payne, which clarified Horan's mysterious tweet.

"Got a first listen to justin biebers new album yesterday wowww big songs!!!" Payne wrote. "Its gunna be a smash...Expect the unexpected :o"

Talk about unexpected -- the admiration between 1D and Bieber seems to have helped spread the love between feuding fans who have been arguing over which tween act is better.

The fight began when One Direction took the U.K. by storm last year after forming on the seventh season of "The X Factor" and releasing its debut album "Up All Night." Facebook pages soon cropped up for One Direction vs. Justin Bieber and vice versa. But after last night's Bieber/1D hangout session, the Twitter hashtags #DirectonersRespectBeliebers and #BeliebersRespectDirectioners began trending.

"Justin and 1D are both friends," tweeted @adorinbieber. "So i think Beliebers and Directioners should at least respect each other and their idols."

In March, Bieber's manager Scooter Braun hinted at a collaboration between the dueling pop stars during a live Q&A on Twitter.

When asked if the 18-year-old pop star and One Direction would unite, Braun tweeted: "Very possible. he likes them and thinks they are good dudes... all people of that generation should be there to help EACHOTHER."

Bieber already pledged his support of the quintet last month, tweeting his congratulations after One Direction's newly released album topped the iTunes charts.

"Good guys always win bro," Bieber tweeted to Horan. "Congrats."

Since then, "Up All Night" has hit the No. 1 spot on the Billboard 200, making One Direction the first U.K. band to debut at No. 1 with its first album.

Thanks to One Direction's success, there have been suggestions it could eat into Bieber's fan base. However, the tween icon is not worried.

"I don't think anyone is taking my fans," he said on Kidd Kraddick's radio show. "I'm all for sharing my fans, I think music is a great thing and a great universal language. I have the greatest fans in the world, and they're never going to betray me so they can like whoever they want."

And if it's a boy band they want, they will have to join the legions.

"The industry needs a fresh boy band, and by the end of this year they will be the biggest boy band in the world," Bieber recently told the U.K. Mirror.

With his support, there is no doubt.

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