None of Grease’s main stars were teenagers, but John Travolta was closer to adolescence than some of his co-stars. Although he was already a movie veteran with starring roles in Carrie and Saturday Night Fever, the actor was only 23 years old when he made a film. According to him, he was born on February 18, 1954. IMDb page while Olivia Newton-John 28 years old, born September 26, 1948.
Despite Travolta’s youth, he was a more experienced screen actor. Newton-John spoke in an interview about how grateful she was for his help. She told Us Weekly“John is a lovely, sweet man. And he really made my whole acting experience easier for me. He was very thoughtful and encouraged me if he thought I wasn’t doing well enough.” She recalled that once he even deliberately messed up the take so that the producers would give her the opportunity to redo the scene. Newton-John also said that he would direct it from time to time. For example, when she was supposed to be mad at her, he acted differently to her off-screen, getting her “turned on, which was perfect for that scene because I needed to be like that,” she said.
And in case you’re wondering, these two said the time was never right for them to date (according to Sunday mail), but at least one of the kisses between them was apparently real, as actress Didi Conn said daily mail. Thus, while there may have been an age difference between them, their close relationship was not affected. As Newton John said Hollywood Lifethey remain friends to this day.