Matthew McConaughey Reveals He Dated Janet Jackson, Anne Hathaway Dishes on 'Princess Diaries 3' on 'WWHL'
McConaughey, Hathaway & Diane Lane Slay at 'Serenity' Premiere

McConaughey also tells Andy Cohen he felt he nailed his audition to play Jack in "Titanic," and Cohen's response is all of us.

Matthew McConaughey and Anne Hathaway wrapped up their "Serenity" press tour Thursday on "Watch What Happens Live with Andy Cohen," where they dished on everything from dating rumors to highly anticipated sequels and everything in between.

During a game of Plead the Fifth, Andy said to Matthew, "There was a rumor that you once went out with Janet Jackson. Can you confirm or deny, and how would you describe your relationship with her?"

Before Andy could even get the last word out, Matthew started belly laughing. It lasted for a good 10 seconds! "You got the answer from that, didn't you?" he finally said.

"Did I?" Andy asked before Matthew confirmed, "We went and had dinner one night. That was sorta it." (Mind. Blown.)

During a later segment, a caller asked the actor about his audition to play Jack in "Titanic" alongside Kate Winslet. (Our minds are now blown for a second time.)

"The audition went really well," Matthew said confidently. "Well enough where, when I left, I was being glad-handed and slapped on the back like, 'This is what we're looking for! You got it!' Well enough where you get outside and you call your agent and go, 'Oh, I nailed it. This is happening.'"

"And then there was a rumor, and James Cameron started this rumor somehow," he continued, "that I got the role and didn't do it. This is false. If I did get the role and 'didn't do it,' that agent who said I 'wasn't doing it' is in big trouble. So, no, I never got the role, but the audition went great. I actually did think I had it."

But the actor has no hard feelings toward Leonardo DiCaprio, saying, "It worked out without me."

Another inquiring mind probed Anne for details regarding a possible third installment of "The Princess Diaries," and her answer could not have been more perfect.

"There is a script for the third movie," she confirmed. "There is a script. I wanna do it, Julie [Andrews] wants to do it, Debra Martin Chase -- our producer -- wants to do it. We all really want it to happen, it's just we don't wanna do it unless it's perfect because we love it just as much as you guys love it. It's as important to us as it is to you, and we don't wanna deliver anything until it's ready, but we're working on it."

Another caller ask Matthew how much "manscaping" was required for "Magic Mike," and the 58 seconds that followed is absolutely worth the watch. Check that out in the video below.

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