John Travolta and Kirstie Alley: A love story

Kirstie Alley and John Travolta were never romantically involved, but that wasn't how she initially wanted it.

Alley, who died Monday at the age of 71 after a brief illness, often talked of her feelings for Travolta, whom she called the "greatest love" of her life.

The pair starred together in the "Look Who's Talking" film franchise (the first movie hit theatres in 1989). During an appearance in 2018 on "Celebrity Big Brother U.K.", Alley talked about how easy it is to fall in love with leading men.

She named two co-stars she said she developed feelings for, but never fully consummated the attraction: Patrick Swayze and Travolta.

"I almost ran off and married John. I did love him, I still love him," Alley said. "If I hadn't been married I would've gone and married him and I would've been in an airplane because he has his [own plane.]"

The same year she appeared on the reality show, the "Cheers" star also talked about Travolta during a conversation on "The Dan Wootton Interview" podcast. She said not sleeping with the movie star was "the hardest decision I've ever made because I was madly in love with him."

"We were fun and funny together," she said. "It wasn't a sexual relationship because I'm not going to cheat on my husband."

Alley was married to actor Parker Stevenson at the time. The couple divorced in 1997.

In 2013, Alley told Howard Stern Travolta also had feelings for her, but didn't act on them because of her marriage.

"It took me years to not look at John as a romantic interest," she said.

Travolta married actress Kelly Preston in 1991. Alley told Wooten that Preston put her foot down about her flirting with her husband.

"Kelly came up to me and they were married then, and she said, 'Why are you flirting with my husband?'" Alley said. "And that was sort of when I had to make a decision and that was pretty much the end of that."

Travolta paid tribute to Alley on social media Monday.

"Kirstie was one of the most special relationships I've ever had," he wrote in the caption on a post on his verified Instagram account. "I love you Kirstie. I know we will see each other again."