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Nick Lachey and Vanessa Minnillo are both no strangers to reality television (He's hosting The Sing-Off while she's the host of True Beauty) -- but would the longtime couple consider joining forces in a Newlyweds-style show?

“There’s nothing in the works right now,” Nick told OK. “I think it would pose a unique set of challenges. I guess the positive is that I’m actually familiar with those challenges. The negative would be I’m also familiar with those challenges. It’s hard to say never to anything. You never know.”

Even though that show was said to have been what ultimately caused the breakup of his marriage to Jessica Simpson, seems like Nick has either learned enough from it to avoid making the same mistake twice, or so desperate for another hit that he doesn't care!

He and Vanessa, who have been together for four years and aren't yet engaged (although the singer says it will happen "at some point" but he doesn't know when), have already broken up once. Can their relationship withstand being under the microscope?