Spencer Tracy met Grace Kelly in 1954, at Academy Award dinner for MGM. He was 54 years old, she was 25 years old. He knew that she interested to older men. He insisted to meet her and accepted to promote a film if MGM arranged a date with her. During dinner, they talked and laughed. After, they had gone to a secret hotel. It was only several years later that tabloïds knew that Spencer Tracy bedded Grace Kelly.
The night he met her, Spencer Tracy had gotten Grace Kelly to a secret Hotel and had sex with her.