Diane Keaton often discussed her decision to never marry despite dating some of Hollywood's most eligible bachelors in the 1970s. "Today I was thinking about this. I'm 73 and I think I'm the only one in my generation, and maybe before, who has been a single woman all her life," she told People in 2019. The actress - who died at age 79 on October 11 - had multiple high profile relationships with her Hollywood costars early in her career.