Justin Bieber and Selena Gomez call it quits...again. (Photo : Twitter: @JustinBieber)

Justin Bieber endured a bad fall during a Wednesday night show in Saskatchewan, Canada with tourmate, Carly Rae Jepsen. Bieber lost his footing and nearly slid down the whole staircase while performing onstage.

Justin Bieber was performing his duet "Beautiful," with fellow Canadian, Jepsen, when the incident occurred.Luckily, the young singer was not hurt too badly and was able to continue performing.

Bieber has experienced recent misfortunes while on his "Believe" tour. The 18 year-old had his laptop stolen, and vomited onstage during a show in Arizona.

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Justin Bieber has proved his love for fans and professional spirit when he endured until the end of the concert despite the incident of throwing up on stage.

His upset stomach caused Bieber to throw up in the middle of the stage while performing "Out of Town Girl," and caused him to leave the stage twice to take a break.

"I'm sorry, I'm going to slow things down," Bieber said after returning to stage.

Bieber retreated backstage again while singing "Never Say Never," a duet with Nicki Minaj who rapped through a taped performance on a central screen, according to USA TODAY.

After the literally show-stopping disappearance, Justin Bieber reappeared to calm down the worried fans.

"It's hard for me, you know, not feeling great and throwing up in front of a bunch of people," Bieber said.

"Will you love me even though I'm throwing up on stage?" he said to a screaming crowd.

"OK, I wanted to give you my best show ever, so do you mind if I finish it?"

The "Baby" singer did finish the concert of 21 songs, proving his enduring love for his fans.

"Great show. Getting better for tomorrow's show!!!! Love u," Bieber tweeted, with a photo of himself lying in bed.

(Photo : )

"And .... Milk was a bad choice!" the singer added.

"The star of the show last night was Bieber, the ultimate professional," Jon M. Chu, creative director of Bieber's tour, told E! News.

"And he really impressed me with his honesty to his fans, without hesitation. This guy knows his audience more than anyone."

"And when he told the audience he was not choosing a 'one less lonely girl' tonight and instead singing it to Avalanna and sang it to an empty chair with a flower crown on it...The whole audience was bawling. Including me. I don't think I've ever felt that emotional at a concert before."

The 15,000 fans at the concert have surely had an once-in-a-lifetime experience, and our love and admiration toward the Canadian heartthrob too can only grow.

Watch Justin Bieber fall onstage (2:00) and throw up: