Bill Gates' 21-year-old daughter Phoebe CONFIRMS she is dating Paul McCartney's grandson Arthur Donald, 25 - as the couple goes public while celebrating her Stanford graduation alongside her billionaire parents

Bill Gates' daughter Phoebe has officially confirmed that she is dating Paul McCartney's grandson Arthur Donald.

The 21-year-old, whose Microsoft founder father is worth a staggering $134 billion, was spotted celebrating her Stanford graduation alongside her new beau - eight months after first becoming engulfed romance rumors.

DailyMail.com previously reported that sparks were flying between the pair - but Phoebe has now openly referred to Arthur, 25, as her 'boyfriend' while documenting her education milestone in an online blog for Nylon.

'My boyfriend, Arthur, giving me a lift post-ceremony,' she wrote alongside a loved-up snap of her beau giving her a piggyback.

In another snap from later in the day, Phoebe, who graduated with a Bachelor of Science degree in human biology, stood with her arms wrapped around her new love interest alongside a caption that read: 'He cleans up nicely.' 

Phoebe and Arthur first made headlines back in October 2023 when she took to Instagram with a snapshot of the pair in Paris.

The duo also attended the premiere of Feud: Capote vs Swans a short time later - but Phoebe then declined to comment on her relationship status when interviewed by Bustle.

Arthur, who graduated from Yale University in 2021 with a major in history, is the elder son of photographer Mary McCartney and her first husband, TV producer Alistair Donald.

He was previously rumored to be dating Reese Witherspoon and Ryan Phillippe's daughter Ava in 2018.

The families of the new couple already enjoy close connections with one another as Arthur's aunt, fashion designer Stella McCartney, is good friends with Phoebe's mother, Melissa Gates. 

'Even when I was little, she would send me stuff and little notes and I'd be so excited,' Phoebe said of Stella. 'We are really deeply connected.'

Before dating the grandson of The Beatles singer, Phoebe was in a relationship with fellow Stanford student Robert Ross. 

Phoebe shared pictures of her cozying up with her then-boyfriend on Instagram and trolls were quick to leave racist comments about her interracial relationship with Robert Ross, who is black.

She responded to the backlash during an interview with The Information, and she said she was 'done' with people making fun of her relationship.

Despite the innocent nature of the photos of Phoebe and her then-boyfriend, Twitter was quick to react to the notion that Phoebe might be dating a black man - with many choosing to make crude jokes suggesting that her rumored beau was simply using her for her father's money. 

The beauty has previously opened up about the highs and lows that come with getting so much attention online. 

When she was asked about the worst part of being a social media sensation, Phoebe admitted: 'The misconceptions and conspiracy theories about my family and my relationship with my boyfriend.

'It's 2023. I'm done being memed for being in an interracial relationship.'

Phoebe's graduation comes after she already made waves in the world of fashion - receiving invites to coveted New York and Paris Fashion Week shows, elite parties, and star-studded events.

She has also racked up some celebrity friends along the way, becoming a viral social media star, and even landing an internship at British Vogue. 

And while some may argue that she has gotten to where she is thanks to her wealthy background, both Bill and Melinda have continuously insisted that they are working hard to ensure that their kids 'create their own path.' 

Discussing her graduation with Nylon, Phoebe explained that she was motivated to complete her course in three years - rather than four - in order to coincide with her mom's commencement speech at the ceremony.

She said: 'I knew I had to make it happen if I could, because I wanted to watch my mother deliver this year's commencement speech as a graduate. 

'I can't think of a better ending!'