She had an abortion without telling the co-star or her future husband

Old Hollywood

This actress, who some say lived a fairy tale life before she died still young was dating the man she would later marry and live with until she died.

While dating she found out she was pregnant with the baby of one of her married co-stars but had an abortion without telling the co-star or her future husband.

Grace Kelly
Husband: Rainier III, Prince of Monaco
Co-star: Frank Sinatra

Source: http://www.crazydaysandnights.net