Following the 1955 death of Suzan Ball, the first wife of actor Richard Long, Corday began dating Long, and they married in 1957. Through Long's sister Barbara, Corday was a sister-in-law of actor Marshall Thompson. In the early 1960s, Corday gave up her career to devote herself to raising a family. Widowed in 1974, she and Long had three children during their 17-year marriage: Valerie, Carey, and Gregory. Corday has also been a lifelong friend of actor Clint Eastwood, whom she met while working for Universal Pictures.