Justin Bieber politely turned down a fan's question on former girlfriend Selena Gomez during a Q&A at his Purpose World Tour concert in Prague,Czech Republic on Saturday night.

Bieber was asked by his fans whether he would be making more R&B music to which he replied "Of Course" , another fan asked if he liked Prague to which he said "Yeah, I like Prague" adding that he wanted to see more of the city before being quizzed about his ex girlfriend.

Crossing the personal boundary was a guy who asked Bieber, "Are you in contact with Selena?"

"Am I in touch with Selena?" Bieber repeated while the audience was screaming with excitement.

"That's a very personal question," said the singer and said that if they could stick to "just regular questions" and not personal questions.

After that he said, "You wanna talk about your ex-girlfriend? Let's talk about your ex-girlfriend." The singer's enthusiasm for the Q&A dipped after Selena question. A lot of Bieber was were outraged over the personal question and took on to twitter to express that.

Selena Gomez and Justin Bieber on and off relation and constant scrutiny of their relation made headlines. Gomez is currently in rehab treating depression and anxiety attacks. Reports had also surfaced that the ex-copule would soon walk down the aisle but these rumours have been rubbished.

The Hands to Myself singer had cancelled her Revival tour had had checked into rehab due to lupus caused anxiety, depression and panic attacks.

At that time Gomez said, I've discovered that anxiety, panic attacks and depression can be side effects of lupus, which can present their own challenges."

Rumours were also rife that Bieber was paying for Selena's rehab which was said to be "untrue" by Selena Gomez's source and have also rubbished claims that he visited her.

Recently Selena's grandfather also spoke out saying that Selena Gomez has no plans of going back to Justin Bieber and that she has moved on.