Alex Rodriguez on Meghan Markle, Prince Harry 'double-date,' jokes he 'signed an NDA'

Alex Rodriguez, Jennifer Lopez, Meghan Markle and Prince Harry all recently attended a fancy shindig last month.

The two high-profile couples reportedly sat next to each other at a private JPMorgan party in Miami, and whatever happened on the "double-date" is now the world’s biggest secret because not only is A-Rod not spilling the beans, he’s got a fool-proof answer at the ready.

The former professional baseball great appeared on “The Tonight Show Starring Jimmy Fallon” and in a clip released on Tuesday, Rodriguez, 44, fielded some burning questions from the funnyman about his and Lopez’s encounter with the Duke and Duchess of Sussex.

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“Did you and Jennifer Lopez recently go on a double-date with Prince Harry and Meghan Markle? If so, who paid?” Fallon asked.

After a brief silence, Rodriguez said: “I signed an NDA,” garnering laughs from the audience.

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“Oh my God,” Fallon, 45, retorted in suspense. “So, that means you did.”

“Non-disclosure,” Rodriguez said basking in Fallon’s agony.

“Yeah, all right. I’ll take that as you did,” the late-night host quipped.

Fox News confirmed Harry, 35, and Markle, 38, attended the "exclusive" JPMorgan event held at the 1Hotel in Miami's South Beach, where the duke himself delivered a speech.

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"[Harry and Meghan] attended a JPMorgan gathering in Miami yesterday, " a source told Fox News at the time, adding that, out of the two British royal family members, it was only Harry who "spoke" to a crowd.

The Sunday Times said at the time that the pair reportedly pulled in $1 million for their foray into the world of corporate speaking.

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On Monday, the parents to 10-month-old Archie completed their final appearance as senior royals before they step back at the end of the month.