Britney Spears - 'Everytime'
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From Ed Sheeran To Taylor Swift - 23 Songs Written About Other Celebrities
10. Britney Spears - 'Everytime'
'Everytime' was Britney's response song to Justin Timberlake's 'Cry Me A River', featuring lyrics like 'I may have made it rain, please forgive me. My weakness caused you pain, and this song is my sorry', relating to the video and lyrics in Justin's song.