JFK & Ellen Rometsch

Yet another mistress in his time as U.S. president. He was wildly attracted to Ellen from Germany, due to her resemblance to Elizabeth Taylor. She even attended secret naked pool parties at the White House. Rumors circulated that she was a German spy, but no evidence of that ever surfaced.

Lyndon Johnson & Helen G. Douglas

Lyndon was just a congressman when the affair started with Helen, who was starting her career in politics as a congresswoman. Lady Bird apparently knew about all his affairs, including this long-term one with Helen, but she knew he would always return to her.