There is NO evidence that Ike had an affair! That crap came from Clinton when he got caught with Monica!
That “crap” came from a 1979 ABC miniseries, which may not have been true. Not sure where Clinton got his info/story from.
http://www.arts.mcgill.ca/history/faculty/troyweb/WithIkeRumorsWereSteamierThanFacts.htm