During an appearance on New York's "Late Night with David Letterman," singer Nick Lachey admitted MTV's "Newlyweds: Nick & Jessica" was a mistake.

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Speaking on the CBS late night talk show Wednesday, Lachey admitted that the reality series that focused on he and his ex-wife, singer Jessica Simpson, was a dumb idea.

"It was among the dumber ideas I think I've ever seen executed in history," Lachey told Letterman.

"For a while we actually enjoyed doing the show (but) it just got to a place where it was so invasive, it became a problem."

The series ran for three seasons and covered a large portion of the singing duo's 3 1/2 years together and since then the couple's divorce has been met with equal media attention.