Nick Lachey made an appearance on The Late Show last night. It's got to be hard on him. No matter where he goes people are always asking about Jessica. And Letterman was no exception. He brought her up almost immediately, and even questioned whether Newlyweds contributed to their divorce. Here's more:

David Letterman: You haven’t been here in quite a long time.
Nick Lachey: It has been a long time.
DL: You were here with your then wife, the lovely Jessica [Simpson].
NL: Yes indeed.
DL: You were doing a show that was on MTV about being a newlywed at the time and, I don’t want to make you feel, maybe you don’t feel bad, I
can’t tell. But I would think that doing a show like that would maybe actually make the marriage stronger.
NL: Yeah. About that. [Audience laughs] Not so much. I don’t think so...It was among the dumber ideas I think I’ve ever seen executed in history.
DL: But at the time, there was every reason to do that show. People liked it.
NL: Yeah. Yeah. Yeah. Yeah. And for a while, I think we actually enjoyed doing the show as well. It was just so invasive that it became a problem.
DL: Do you think that was why the marriage broke up?
NL: You know that’s one of those things where I think until you get enough hindsight and enough clarity and perspective, I don’t think you can really know what happened. But, I certainly think it was probably a factor.
Like I said, it's got to be tough. But Nick seems to have come out okay on the other side (and more famous as well). To check out the rest of the interview just read more