Britney Spears’ first husband, Jason Alexander, publicly condemned Kevin Federline’s upcoming tell-all memoir.

Taking to Instagram on Tuesday, October 14, Alexander, who was married to Spears, 43, for 55 hours in January 2004, slammed the singer’s second husband Federline, 47, in a lengthy post accompanied by a mocking meme.

“Kevin, You Don’t Get to Rewrite the Story Without Owning Your Role,” Alexander, 43, began. “Surprise, surprise, it leans heavy on painting Britney in a bad light. As someone who’s known Britney most of her life — not just as her first husband, but as a friend who’s seen what she’s gone through — I can’t stay silent. Kevin, you don’t get to tell half the story. Not when you were in the middle of it.”

Alexander, a childhood friend whom Spears married while under the

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