Jimmy Fallon knows the secrets behind the notorious Justin Timberlake and Britney Spears breakup of 2002 but is being coy about the details.

The late-night talk show host appeared on Andy Cohen’s “Watch What Happens Live” on Thursday night (Nov. 2) and played a game of “Plead the Fifth”, a quick-fire round of questions that require the most honest of answers.

During the game, Cohen asked Fallon about the JT and Britney separation and if he knew why the two parted ways. “Yes,” the 43-year-old comedian answered bluntly but was reluctant to elaborate further.

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Fallon and Timberlake are well-known besties, having become friends during Fallon’s stint on “Saturday Night Live”,  which Timberlake has hosted on a number of occasions.

“We used to hang out all the time with Britney as well. That’s how we met each other on ‘Saturday Night Live’,” Fallon said. “I remember going to a Super Bowl party at Planet Hollywood that Britney and Justin were having. It was just really fun.”

After Fallon swiftly dodged the question, Cohen continued to dig for details. “At the time, did you think, These two are never breaking up. This is amazing?”

Fallon gave a quizzical look before shaking his head.

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He continued to keep things close to the chest when a caller later asked about Timberlake’s Super Bowl plans and whether he intended to include Janet Jackson in his halftime show. “That’s top secret,” Fallon answered.

“He has so many ideas for this thing. It’s going to be the biggest show ever.”

It wasn’t all JT questions though, Fallon also played a game of “Shag, Marry, Kill,” with fellow late-night hosts Jimmy Kimmel, James Corden, and Stephen Colbert as options.

“I’m friends with all of them,” he said, before making his choices. “Me and Kimmel have already shagged, so I’ll shag Jimmy. I will marry Colbert.” That meant he’d have to kill Corden, but in “a funny British way.”

“It will be a Monty Python way of killing,” he said.

Watch the interview above.