The only president who had what I would call a mistress was Franklin Roosevelt. Jack Kennedy and Bill Clinton had extra-marital affairs. Warren Harding also may have, but I think they ended before he was President. Woodrow Wilson is another suspect.
Chat with our AI personalities
all of them probably did.
There is much speculation over which presidents had mistresses. Thomas Jefferson supposedly had an affair with his neighbor's wife, Betsy Walker, for example. JFK was linked romantically to Marilyn Monroe. FDR also had a number of supposed mistresses.
John Kennedy and Franklin Roosevelt had well-documented love affairs while they were President. Woodrow Wilson had a very close female friend that he wrote to, but may have been faithful to his wife in the strict sense. Other presidents had affairs but I think they were all broken off by the time they were President.
The White House.
One