Did Dave Letterman and Regina Lasko sign a prenup?

The prenuptial agreement can prevent divorce
It seems the King of Late Night TV David Letterman and his long term girlfriend Regina Lasko quietly tied the knot in Montana last week and he discussed the happy event on his show. Says Dave according to Reuters:

” … I had avoided getting married pretty good for, like, 23 years, and I — honestly, whether this happened or not — I secretly felt that men who were married admired me … like I was the last of the real gunslingers,” Letterman said, according to a “Late Show” transcript provided by a spokesman. But the afternoon ceremony at the Teton County Courthouse in Choteau (pop. 1,700) was delayed by an hour because the family’s pickup truck was stuck in mud two miles from their house. Letterman was forced to walk back in a howling gale to get the car.

I must say, that is a very interesting symbolism. The mud, the gale, the delay, the 23 year wait….I just find myself wondering, “did they sign a prenup?”