United Kingdom, Aug. 28 -- Henry Winkler thought his "life [was] over" when Ron Howard quit Happy Days.

The 79-year-old actor played Arthur 'Fonzie' Fonzarelli on the hit sitcom, and he quickly developed a close relationship with Ron, his co-star.

Speaking to People, Henry recalled: "When we worked together, there was something that happens out of the blue. We had a shorthand with the script. He went where I went, I went where he went, and it became something else."

However, Ron decided to quit the show in 1980, and Henry still has vivid memories of the day he found out.

Henry shared: "There was a phone booth right by the front door of stage 19. They said, 'Oh, the phone is for you, Henry.'"

Ron - who has subsequently become one of t...