10. It's now been over ten years since Britney Spears and Justin Timberlake broke up *sad face*. This image appears in the gallery:25 Pop Music Facts To Make You Feel Old 10. 10. It's now been over ten years since Britney Spears and Justin Timberlake broke up *sad face*. 26 images See the full gallery: 25 Pop Music Facts To Make You Feel Old