Fans were abuzz when Mario Lopez admitted in his memoir that he had a one night stand with a “mega pop star.” Now Us Weekly is reporting that the mystery woman is none other than Britney Spears.

According to multiple sources, the two hooked up when Britney was recently divorced from Kevin Federline. The 41-year-old host talked about the experience on The Ellen Degeneres Show, where he said the fling happened in Las Vegas.

“I’m trying not to give too much away without giving too much away,” he told Ellen.

“It was maybe six or seven years ago… eight years ago?” According to Mario, they remain “friendly.” The two were last seen together in 2013 when he joined her onstage during her show in Vegas, Britney Spears: Piece of Me.

This wasn’t the only bombshell in his memoir. He discussed his failed marriage to model Ali Landry, whom he admit to cheating on back in 2011.

“I got inebriated and a little too friendly with a young lady,” he wrote. “When it was time to return home, lightning hit me with the truth: I wasn’t in love. But I walked down the aisle [anyway.”