"When We Two Parted" was written in 1816 by the British Romantic poet Lord Byron. It describes the pain and disillusionment that follow a break-up between the speaker and his lover. Though little detail is provided, it's implied that the original relationship was secret—most likely an extramarital affair—and that the speaker now feels bitter upon hearing about his lover having an affair with someone else. Most scholars believe this poem to be about Byron's relationship with Lady Frances Wedderburn-Webster, a married aristocrat with whom Byron had an alleged affair. She was later rumored to have also had an illicit relationship with the Duke of Wellington—a prominent British military leader—which in turn, the theory goes, prompted the writing of this poem.