Bill Gates’ daughter Phoebe has officially confirmed her relationship with Paul McCartney’s grandson, Arthur Donald. The couple, who first sparked romance rumors in October 2023, made their relationship public during Phoebe’s Stanford University graduation, with Phoebe referring to Donald as her “boyfriend” in a post on Nylon. The 21-year-old shared sweet snaps of the couple, including one where Donald was seen giving her a lift post-ceremony. Phoebe, the youngest of Bill and Melinda Gates’ three children, obtained her bachelor’s degree in human biology in just three years. Arthur Donald, the eldest of McCartney’s eight grandchildren, graduated from Yale University in 2021 with a major in history. The couple’s relationship has attracted attention, especially after Donald was previously linked to Reese Witherspoon and Ryan Phillippe’s daughter, Ava.