He may have cemented an historic Olympic triple-triple, but the spotlight is still firmly on sprinter Usain Bolt after he was filmed dirty dancing with a mystery woman in a Rio nightclub.

Images of Bolt allegedly in bed with another 20-year-old woman have also gone viral.

The saucy footage came after Bolt’s sister declared it was time for him to settle down, and that his long-term girlfriend Kasi Bennett would make the perfect match.

“I’ve met her and she’s lovely – she’s perfect for Usain,” Bolt’s sibling Christine Bolt-Hylton told The Sun only a day earlier.

“I would say that there’s a very strong possibility they’ll get engaged when he comes home.”

Bolt, a nine-time Olympic medallist and arguably the greatest athlete of all time, was seen grinding up on the mystery woman after his 4×100 metres win, undeterred by mobile phone cameras capturing the intimate moment.

The celebration also coincided with Bolt’s 30th birthday – or, just another milestone for the fastest man in the world.

Usain Bolt.
Club Alin Rio, 2016.
After conquering the world with the triple triple…https://t.co/1MHm8ZrTDb

— Ebuka Obi-Uchendu (@Ebuka) August 21, 2016

‘I’m going to party’

Bolt is notorious for big-noting himself, but he always walks the walk.

“There you go. I’m the greatest,” he told reporters after nabbing the incredible 100 metres, 200 metres and 4×100 metres gold medals for a third straight Olympic Games.

“I’m going to stay up late and have fun.”

Bolt’s girlfriend Kasi Bennett announced she was logging off Twitter. Photo: Twitter

In true Bolt style, he did what he promised.

The sprinter reportedly began his big night in the VIP booth of a Rio club, before properly cutting loose when he joined the crowd on the main dance floor.

The footage, shared across Twitter, confirms he’s got moves on and off the track, but is likely to find himself in trouble when he returns to Jamaica, if his sister’s perception of his relationship is accurate.

“Usain has had a few girlfriends, but not many – but no one ever as serious as Kasi and I’m sure he’ll be settling down with her before long,”Bolt-Hylton said.

“I think she’s the one.”

And dirty dancing was only the start of Bolt’s birthday bash.

The Daily Mail reported photos of Bolt and Rio student Jady Duarte, 20, were taken the day after the sprinter’s 30th birthday, adding to his morning-after headache.

Bolt and student Jady Duarte allegedly the morning after his 30th birthday. Photo: Twitter

Is the sprint king in hot water over his birthday antics? Photo: Twitter

‘They are legitimately culture shocked’

Kasi Bennett, Bolt’s squeeze of three years, had been re-tweeting praise of the runner’s historic achievements throughout the Games, but on Monday (AEST) she announced she’d had enough of Twitter.

https://twitter.com/kasi__b/status/767496441820352516

Earlier, Bennett posted a tweet that may have referred to the media frenzy surrounding Bolt’s dirty dancing.

https://twitter.com/kasi__b/status/767436880166002694

Bennett may have been referencing the western media’s ignorance over Jamaican dance moves.

Bolt and his female acquaintance’s frantic, sexual dance style is known as ‘daggering’ or ‘cabin stabbing’ in Jamaica.

The move is traced back to the dance hall genre scene in 2006 and its popularity has caused the government to ban the transmission of songs containing “sexual” content.

Track immortality 🏅🏅🏅 #3peat #TeamBolt 🇯🇲🇯🇲🇯🇲 pic.twitter.com/JHWaMPig6G

— Lil Gucci of the Loom (@kasi__b) August 20, 2016

-with James Ried and Rose Donohoe