Article continues below advertisementGavin Rossdale looked back on a fun pool day he spent with former next-door neighbor Britney Spears in the early 2000s. The "Bullet Holes" singer, 60, was asked to confirm a story from a throwback interview in which the "Toxic" singer, 44, casually revealed she once went swimming with him. Article continues below advertisementSource: Page Six Radio/YouTubeGavin Rossdale told a story from the early 2000s about his former neighbor Britney Spears.