In most marital breakdowns, there is usually someone else involved. In most cases it's a person of the opposite sex. This seems to be true regarding the announced separation involving Al Gore and his vivacious wife of 40 years, Tipper. In this case, however, there is some ambivalence, with the devil being in the details.
With friends of both Tipper and Al proclaiming that neither has been unfaithful, one can only surmise that they are subscribing to the Slick Willy definition of sex; as in, "I did not have sex with that woman."
For those who believe that a gentleman who was but an impeachment away from being the President of the United States, and who also scored a Nobel Prize, would be able to do better than poor Barney, let me point out that Elton John has already been spoken for.
With every rumor one must judge the source. Let me just say that my source, who shall remain nameless, is not related to Deep Throat.