You mean Gingrich's second affair? He left wife number one while she was recovering from cancer to hook up with number two, then ditched number two to hook up, during the Clinton impeachment hearings, with the much younger chick he's married to now. Rumors were flying inside the beltway few months ago that the current Mrs. caught him fooling around and to make amends, he converted to Catholicism for her.
I think the facts on Gov. Sanford will eventually show that this ain't no MLC (as much as the Gov would like to attribute it to some sort of malady for which he can fashion a cure); those who know the man say he's a lifelong birddogger.