Even close friends of Robert F. Kennedy Jr., a notorious cheater who had numerous affairs while with past wives Emily Black and Mary Richardson, think his new wife, “Curb Your Enthusiasm” star Cheryl Hines, was crazy to marry him and think he’d be faithful. [Snip] “Any woman who gets involved with Bobby does so with her eyes open, or their brains lopped off,” said the so-called friend. “Any woman who thinks they’re going to change Bobby is misguided and purposefully ignorant. Women have to understand what they’re getting into when they’re with him.”