Justin Bieber -- Are You Banging Selena Gomez??? Lawyer Demands Answer

Justin Bieber can run, but he can't hide -- the lawyer who deposed him last week wants to force the singer to answer the Selena Gomez questions he rudely dodged last week ... and then have Bieber punished for acting like a self-entitled jackass.

As we reported, Bieber stormed out of his Miami deposition stemming from his photog-beating lawsuit -- after the pap's attorney tried to ask if he's dating Selena. Bieber cut him off, saying, "Don't ask me about her! Do not ask me about her!" and took off.

The lawyer has now filed court docs, insisting he was entitled to ask Bieber about Selena -- because she was present during another alleged photog attack in 2012 ... and what transpired then is relevant to the current case because it shows Bieber has a pattern of aggression toward photogs.

But really, it appears the lawyer wants to establish Bieber and Selena are close -- in the event Selena tries to discredit the photog's case at a later deposition. If Selena and Justin are dating, Selena could be considered a biased witness ... and therefore not credible.

The lawyer wants a judge to force Bieber to answer his Selena questions.