Justin Bieber is not having an easy time in Brazil, even if he's allegedly having fun with easy women. The 'Heartbreaker' singer broke some Beliebers' hearts when he stormed off the stage at a concert in Sao Paulo last night. What happened?

Bieber was reportedly an hour late for his performance at the Anhembi Arena and left the show early after fans began misbehaving. How? Apparently someone threw a water bottle onstage, and Biebs decided he'd had enough.

"The public called for him, sang 'Baby,' and yet nothing," sources told G7 (via Metro). "The lights came on, Bieber's team started to take the equipment away and the fans realized it wasn't going to happen. In the end there was no farewell, no thanks and no rendition of his most famous song."

Apparently the bottle was thrown during the end of his performance of 'Boyfriend,' which you can see above -- it's grainy and happens very fast, so you have to keep your eyes peeled and look closely. This isn't the first time Bieber has expressed frustration at Beliebers throwing things onstage, so come on, guys. Don't ruin it for everyone else!