The 18-year-old, his girl, and HRVY put on their best sunny weather outfits as they enjoyed the sunset on their bicycles.
Taking a break from cycling, the trio sat on their bikes as they posed for a fun picture.
They all flashed their best smiles for the camera while lounge chairs can be seen in the background.
Mia kept cool in a floor-length gingham dress which was designed by Romeo’s mum Victoria Beckham.
Meanwhile, Romeo rocked skinny jeans and a tie-dye shirt.
He also accessorised with sunglasses, a silver watched and dark purple sneakers.
HRVY, 22, donned a shirt from Justin Bieber’s brand drew and paired it with blue trousers that had Pikachu emblazoned on them.
In another snap posted to Romeo’s page, the son of Victoria and David Beckham posed on his own.
This time, the snap was taken before the sun started setting.
Romeo, who now rocks a blonde buzzcut, sat on the bike as he posed in front of a house in his cool outfit.
He and HRVY have been pals for a while now and also celebrated England’s 4-0 win against Ukraine in the Euros at the beginning of July.
The singer and presenter shared a series of snaps of the bash on Instagram, showing HRVY partying and playing football with Romeo and TikTok star Harry Crawford.
HRVY partied with Romeo during the Euros
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“photo dump of last nightttt, it’s coming home,” HRVY, real name Harvey Leigh Cantwell, captioned the pictures.
In the snaps, the YouTube star can be seen smiling as he puts his arm around Romeo’s shoulders, and in another, HRVY is smiling as he stands alongside social media star Harry, while holding a bottle of cider.
The pictures also show the lads playing football, and in one edited snap, HRVY can be seen posing with his makeshift football team – which featured Romeo – as they geared up to watch the England match.
Romeo’s girlfriend was also at the bash, and in one picture, HRVY can be seen photobombing the couple as he pretended to kiss Romeo.
When HRVY’s not hanging out with Romeo, he’s busy trying to land a part on Love Island.
He revealed he had a conversation with bosses at ITV over whether they would allow him to go into the villa to look for love.
“I had an interview with the ITV bosses about other stuff and I was like, ‘So realistically, can I go on Love Island?’” the singer told the Capital Evening Show with Jimmy Hill.