Phoebe Gates, the youngest daughter of Bill and Melinda Gates, has confirmed her relationship with Arthur Donald, the grandson of Paul McCartney, in an Instagram post. The couple sparked dating rumors in October 2023 and were seen together at several events, including a trip to Paris and the premiere of 'Feud: Capote vs. The Swans'. Phoebe, 21, shared the news while documenting her Stanford University graduation for Nylon Magazine, posting photos of Arthur giving her a piggyback ride and the couple hugging. Arthur, 25, graduated from Yale University in 2021 with a major in history. The couple's families are connected, as Arthur's aunt, Stella McCartney, is a close friend of Melinda Gates. Phoebe previously faced backlash over a past interracial relationship, which she addressed by condemning the racist comments.