Winona Ryder
Winona Ryder's best-known relationship is easily her whirlwind romance with Johnny Depp. The two young, alternative actors were very "aesthetically pleasing" and Hollywood loved them. They started dating after Edward Scissorhands and only lasted a couple of years. She's been with her current partner, Scott Mackinlay Hahn since 2011, but they're making no moves for marriage.
Harper Lee
The famous and applauded author of To Kill a Mockingbird never shared her wealth or fame with any partner. Even though she chose to keep her private life a secret, she was generally pretty open about her lack of desire to get married. She also never had any children. She passed away in 2016.