While he didn't give away the name, the TV host called his bedroom co-conspirator a "mega pop star." That doesn't leave many names left to figure out. While some people thought it might have been Christina Aguilera, the timeline didn't fit because she was married at the time.
When he shared with Ellen DeGeneres on her Oct. 2 show, he said, "I'm trying not to give too much away without giving too much away. It was maybe six or seven years ago… eight years ago?"
That news confirmed what many had thought all along; the "Toxic" singer was the answer. At that time, Spears had already split from Kevin Federline, and Lopez was on a break from his on-again, off-again relationship with Dancing With the Stars pro Karina Smirnoff.
The other tip-off was the fact that he told DeGeneres the two were still "friendly." It was Lopez who was brought up on stage for the opening night of Britney: Pieces of Me. Perhaps the whipping scene was a fun throwback to their night of ecstasy in Las Vegas all those years ago?
The TV personality has since gone on to marry Courtney Mazza and have two kids with her. Spears recently broke up with boyfriend David Lucado in August after cheating allegations.
It looks like what happened in Vegas didn't ultimately stay in Vegas.
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