During the trial, Barrientos had told the court that he had “fancied” the woman when they met at the concert venue.
Barrientos, who was born in Colombia and brought up in the UK, had been in the VIP area while she leaned over the barrier from the general area.
He denied touching her inappropriately.
“I recall putting my hand on her waist,” he told the court. But he said he had not put his hands down her pants or touched her breast.
He said the “vibes were good” between him and the woman when they arrived at his hotel later.
His security guard took the woman’s phone away – “standard practice” to protect their privacy, according to Barrientos.
The court heard that the pair had engaged in consensual sex in his hotel room before Barrientos turned violent and the young woman, who cannot be named for legal reasons, told him to stop.
The woman accused the social media star of biting, bruising and even trying to choke her. Photos of bruises and bite marks on her face and neck were shown in court.
Barrientos denied the woman had repeatedly asked him to stop, but did acknowledge that he bit her several times, explaining that he gave her a “love bite”.
During the trial’s closing arguments, prosecutor Danielle Clarke said Barrientos was an “entitled” man with a “moderate degree of fame” who had violated the fan “in the most intrusive way possible”.
His defence lawyer argued that the accuser’s evidence was full of “inconsistencies, embellishments and outright lies”.
Barrientos is known for his work with the YouTube collective Beta Squad, and has appeared in the celebrity version of Bake Off on Channel 4 and presented Three shows.
In addition to his 1.8 million YouTube subscribers, he has three million followers on TikTok and and 2.4 million on Instagram.