Justin's Bieber's rumored girlfriend Ella-Paige Roberts-Clarke has yet to confirm her relationship with the pop sensation, but that has not stopped Belieber fans from bashing her on Twitter and even comparing her to Bieber's ex-girlfriend, Selena Gomez.

The singer/model has been very social media savvy with Bieber's fans, kindly responding to many inquiries. However, on Monday night the singer tweeted, "some people make me nervous" after receiving a heavy load of not-so-nice tweets.

When one fan reportedly told her "please b***h, justin loves selena!" and then went on a rapid plead of asking for forgiveness, Roberts-Clarke replied "don't be sorry."

When she later tweeted "I aint going no where:), " another Bieber fan who has a "Ella Paige" username and profile picture responded: "that's a shame, I thought you'd be gone by now considering you have no fans and everyone hates you."

One Roberts-Clarke supporter replied to the comments and wrote, "don't talk for others...We love her! And so does justin..."

The singer is also a huge fan of Bieber. On her official YouTube page she uploaded an original song titled A Thousand Stories, a ballad which shows off her vocal skills and is a cover of Bieber's As Long As You Love Me mixed with Rihanna's Diamonds. She posted the video the day after celebrating Bieber's birthday with him on Friday.

Roberts-Clarke was spotted leaving Bieber's hotel the morning after his so-called "Worst Birthday" party that she could not attend. She was dressed in the same clothes as the night of the party and rocking a "bed head look."

Bieber may have still been mad from Friday's night disastrous birthday, as he upset fans at a London concert on Monday night after arriving almost two hours late. The Baby singer was booed by fans who expected him to hit the stage at the O2 Arena at 8.30 p.m. and some furious concert-goers took to Twitter to vent their frustration.

"Someone needs to buy Justin Bieber an alarm clock - or give him a boot up the bum. 90 minutes late on stage on O2 on a school night... poor," a fan tweeted.

Financial analyst Louise Cooper, who took her 9-year-old daughter to the concert as a birthday present, said, "There were teenage girls crying outside."