Britney Spears is owning up to her past infidelity.

In her upcoming memoir The Woman in Me, the "Stronger" singer addressed the longstanding rumor that she cheated on Justin Timberlake during their early aughts romance. Though she confirmed that she did kiss choreographer Wade Robson, who worked with Timberlake and *NSYNC during their 2000 No Strings Attached Tour, Britney contended it was a reaction to rumors of her then-boyfriend's own unfaithfulness, according to the New York Times, who obtained a copy of the book.