Watch: Bill Gates Discloses How Much Money He'll Leave His Kids Jennifer, Rory and Phoebe GatesPhoebe Gates's relationship with Paul McCartney's grandson is in yesterday. The 22-year-old daughter of Bill Gates and Melinda French Gates confirmed her breakup from Arthur Donald two years after they first sparked romance rumors. In fact, Phoebe shared that she is already dating someone new. "It's amazing," she said of her current relationship during the Sept. 4 episode of her The Burnouts podcast. "It's the best thing ever. And this is completely new for me. I've never been with someone like this.