Morning after collapsing onstage and being hospitalized, pop star admittedly “let the paps get the best of me”.

We will always believe in Justin Bieber, but we’re a little concerned about him lately.

Friday morning, hours after collapsing onstage in London and being rushed to the hospital, the 19-year-old became visibly upset with the paparazzi and had to be restrained by his own bodyguard.

Justin Bieber

A video of the incident (below) shows a paparazzo screaming at an SUV with Justin inside. “F–king little c–k, f–k off back to America,” the photographer says after claiming that he was manhandled when the pop star made a mad dash for the vehicle. “F–kin’ little moron.”

Justin Bieber

At that point, Justin hops out of the car and asks furiously, “The f–k did you say? I’ll f–king beat the f–k out of you!”

As shown in the pics, Selena Gomez’s ex lunged toward the man who verbally attacked him, then was held back and lifted off the ground by his own security team.

Find out more about why Justin collapsed

He does apparently realize that it wasn’t his finest moment. “Ahhhhh! Rough morning,” he tweeted. “Trying to feel better for this show tonight but let the paps get the best of me…”

“Sometimes when people r shoving cameras in your face all day and yelling the worst thing possible at u…well I’m human,” he added. “Rough week.”

“Not gonna let them get the best of me again,” he wrote. “Gonna get focused on this show tonight. Adrenaline is high now. Gonna put it on the stage…Only way someone can break u is if u let them.”

Our advice for J.B. on bouncing back from this bad week

And despite a few setbacks, the Biebs isn’t about to disappoint his fans. He tweeted a confirmation that tonight, “Night 4. O2. London. #BELIEVEtour” is still happening.

That’s dedication. We just hope Justin isn’t working himself too hard.