Looks like Justin Bieber got a little up close and personal with Selena Gomez over Instagram recently, and the end result was leaked to the public!

Radar Online has the exclusive report: claiming, once again that his phone was "hacked,"the beleaguered pop star's intimate photos sent to Selena have been leaked to the general public. The intimate photos were sent to Selena while she and the Beebs were having a huge blow-out fight, where Selena called Justin a "drug addict" who needs to go to rehab.

The flirtation started out innocently enough. "Baby, come on. I love you," Bieber write. But Selena fired back angrily, "I don't buy that bull-hit anymore. I was honest with you and gave you another chance. But my friends were right: you're such an a--hole."

This, apparently, set the Beebs off, and the fight was on.

"Come on, don't tell me you don't miss this," he wrote under a photo of his erect penis, which Bieber was gripping with his left hand. (It is this that made Radar Online declare that the photos were real -- Justin is left-handed, and the phone it was sent to is registered to Brian Teefey, Selena's step-father.)

"Stop it," Selena responded. "Scooter is right. You need to go to rehab. You're sick."

"Rehab? F-ck that!" Justin shot back. "I make that f-cker so much money." He then sent another photo of his penis to Selena.

After Selena wrote back for the last time saying that they were "through," that he needed to get jail time for the egging attack, and that he was an idiot for letting Little Za take the fall for his actions, Justin went off the deep end.

“F*CK YOU!!!!! I need to grow up?!” Bieber lashed back. “HA ok! Enjoy life with OUT ME B*TCH!!! F*ck you. F*ck Scooter. F*ck all y’all. IAM DONE!”

Gomez responded, “Good!!! Go ‘retire’ or whatever bullish*t attention ur trying to get."

But refusing to take the bait, he texted back, “Can’t hear you over my cash, babe! You’re only famous cuz of me. You know it. I know. Everybody knows. Bye. … Go f**k someone else. Keep that talentless p***y away from me!”

When confronted with the texts and Instagram messages, Bieber's camp insisted that the correspondence was "phony" and that Bieber didn't send the messages to Selena.

Sounds like the Bieber is slowly, but surely, coming completely undone. Stay tuned for more developments!