By SARAH BULL
New track: Justin Bieber has revealed he has written a song about Mariah Yeater, who claimed the singer was the father of her son Tristyn
He came forward to vehemently deny Mariah Yeater's claims that he had fathered her baby. And now Justin Bieber has revealed he wrote a song about Yeater, a fan who claimed last year that he was the dad of her son, Tristyn, before she dropped a paternity case against him and confessed her ex-boyfriend was the child's real dad.
Bieber, who is currently on a promo tour of London, said he penned the track for his new album, and writes about situations which have big impacts on his life.
The 18-year-old singer said: 'There's a song about that girl that said she was gonna have my baby, Mariah Yeater.
'There are songs about things I'm going through. I wrote songs about different situations.' The Boyfriend hitmaker - who is a Christian - has described his new album as being a mix between Black Eyed Peas singer Fergie and Jesus Christ.
It's not the first time that Bieber has made reference to Yeater's claims in recent weeks.
Popular: Bieber found himself surrounded by fans as he arrived at the Kiss 100 studios in London today
Meeting and greeting: Despite the amount of people Bieber had to meet, he maintained a cool head
Not taking no for an answer: The singer's fans were determined to get close to the star
Earlier this week, Bieber direct a tweet at Yeater, on which he attached a video clip of Sacha Baron Cohen's Borat character constantly saying: 'You will never get this.'
He wrote: 'Dear mariah yeeter ... we have never met ... so from the heart i just wanted to say... (sic).'
Bieber had previously agreed to take a paternity test in an attempt to rubbish her claims, and insisted in November 2011: 'None of it is true. Never met the woman.'
I love you! One young girl looked particularly excited to meet her idol outside the radio studios
Meanwhile, Bieber proved that the scandal around Yeater's claims has done nothing to affect his popularity with fans.
The teen star found himself surrounded by hundreds of female fans as he headed to the Kiss 100 studios in London this morning.
While being the focus of such attention might be daunting for some, Bieber took it in his stride as he smiled at fans and signed autographs for the waiting crowds.
Launch: Last night, Bieber attended a playback of his new album alongside The Voice host Reggie Yates
Since touching down in London last week, Bieber has been unable to go anywhere without being surrounded by eager fans.
But the singer insists he loves his fans, writing: 'Wow. Airport was crazy getting to London! All worth it for my beliebers. Some people always tryna ruin it for the fans. Not today Swaggy.'