Abraham Lincoln & Joshua Speed

They actually lived together for almost 4 years. Speed and Lincoln were known to have a very intimate friendship and slept in the same bed, despite having space and money for more beds. Lincoln also allegedly had an affair with David Derickson. It’s rumored that Lincoln only married Mary Todd so that he could appropriately move forward in political circles.

Warren G. Harding & Carrie Fulton Phillips

Their affair became well-known in their time. Harding was a senator when the romance began but the pair stayed together for a long time. The love ended when Harding became the president and she blackmailed him into revealing their secret.