This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

(WJW) — Following the death of his good friend Olivia Newton-John Monday, actor John Travolta took to Instagram to honor her life.

“My dearest Olivia, you made all of our lives so much better,” Travolta said in a post. “Your impact was incredible. I love you so much. We will see you down the road and we will all be together again. Yours from the moment I saw you and forever! Your Danny, your John!”

The pair got to know one another in 1978’s “Grease,” playing the two main characters Danny Zuko and Sandy Olsson. 

  • GOOD MORNING AMERICA – John Travolta and Olivia Newton-John reunite on GOOD MORNING AMERICA, airing MONDAY, DEC. 17 (7-9am, ET) on the Disney General Entertainment Content via Getty Images Television Network. (Photo by Heidi Gutman/Disney General Entertainment Content via Getty Images) OLIVIA NEWTON-JOHN, JOHN TRAVOLTA
  • LOS ANGELES – JUNE 16: The movie “Grease”, directed by Randal Kleiser. Seen here at the drive-in (from left) Olivia Newton-John as Sandy and John Travolta as Danny Zuko. Initial theatrical release of the film, June 16, 1978. Screen capture. Paramount Pictures. (Photo by CBS via Getty Images)
  • LOS ANGELES – JUNE 16: The movie “Grease”, directed by Randal Kleiser. Seen here from left, Olivia Newton-John as Sandy and John Travolta as Danny Zuko singing ‘You’re the One That I Want.’ Initial theatrical release of the film, June 16, 1978. Screen capture. Paramount Pictures. (Photo by CBS via Getty Images)

The two lifelong friends were seen together through the decades, including in 2018 in celebration of the 40th anniversary of the fan favorite film.

“You can see from the energy on that film, we were so anxious to get it right that I think everything — it was like going to school,” Travolta told Variety then. “Every day there was a regimen: song, dance, recording, rehearsing scenes, rewriting scenes. It was a big myriad of events.”

The Grammy award-winning star was reportedly surrounded by those she loved most when she died at her California home Monday morning. The family asked that fans respect their privacy during this trying time. The actor/musician was 73 years old.