Photo: Bruce Glikas/Getty

NEW YORK, NEW YORK - JUNE 05: Marilu Henner poses at the “Grease” 50th Broadway Anniversary, Reunion and book launch for “Grease:Tell Me More, Tell Me More” at Sardis on June 5, 2022 in New York City. (Photo by Bruce Glikas/Getty Images)

Long before it became a classic,Marilu Hennerappeared in the very first production ofGrease— but she wasn’t there for its opening night on Broadway!

The actress, 70, tells PEOPLE that even though she played Marty in the original Chicago company of the musical, she didn’t have faithGreasewould last long if and when it transferred to theGreat White Way.

“I was just starting at the University of Chicago, and I thought, ‘No way is this thing gonna be hit. I’m not gonna waste the time leaving school,’ " she explains, adding that the 1971 Chicago production was “gritty” and included “37 songs in the first act alone.”

In fact, she adds, “My mother wouldn’t come to see it because I said ‘F you’ in it seven times. She said, ‘Mari, I don’t care if you take off your clothes, I just don’t wanna hear you swear.’ "

However, when the musical opened on Broadway in 1972 — with Katie Hanley in the role of Marty — “I could not believe how much they changed it,” says Henner, while celebrating the release of the new bookGrease, Tell Me More, Tell Me More.

“I saw it on a class trip and I was like, ‘Damn, I made a mistake. This is so fabulous,’ " she adds. “So when the opportunity came up for me to do the national company, I did it.”

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(Original Caption) John Travolta made his first public appearance since being nominated for a Best Actor Academy Award at a party honoring CBS-TV movie critic David Sheehan. Travolta credits Sheehan with single-handedly convincing Academy voters to nominate the young star of Saturday Night Fever. The party was held at Pipe, a private disco club where Sheehan’s new series, Focus on Hollywood,” was being premiered. Travolta is dancing with actress Marilu Henner.

Henner toured with the musical alongsideJohn Travolta— who played Doody in the stage version before eventually starring as Danny Zuko in the 1978 film — as well as herTaxicostar Jeff Conaway. The three would eventually do the show on Broadway as well.

“I first met [Jeff] doingGreasebecause he was Danny Zuko,” she says of the late actor, whodied in 2011. “He was like my brother.”

Henner adds that she and Travolta, now 68, were the “two youngest” in the cast around ages 18 and 19 when they were on tour.

“We were great friends, and we were friends for a long time,” she says of Travolta, whom she also dated on and off at the time.

While traveling with the musical, Henner says there were “romances, accidents, dramas, cliques” and even accidents.

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“Are you kidding me?!” she says, recalling a time she was running late to a performance ofGreasein Michigan.

“Johnny and I were hanging out in Detroit, and all of a sudden, it was like, ‘We’re late, we’re late. We’re late.’ This was May 6th, a Sunday,” says Henner, who hashyperthymesia or total recall memory.

Despite the injury, she adds, “You don’t care because you’re young, you’re happy … That road life is very special.”

source: people.com