Some times nothing, some times everything. I'm sure someone can do a syllogism of this, but my feeling is that a man who is harassing and violent towards women probably isn't the sort of guy who is likely to suddenly grow a conscience when it comes to cheating on his wife. But I don't think the flip is true---that a cheater is necessarily a violent man. So, I'd say that there's no reason to think Bill Clinton or Newt Gingrich harasses women because they're cheaters. But a man who harasses women is probably a cheater.