The 72-year-old diva had previously said that Scientologist Cruise, 56, was one of her best lovers and that they are still friends today.
And she revealed that they only hooked-up because they were both suffering from dyslexia.
She revealed: "Yeah! Though I don't get what he does, that whole Scientology thing. I can't understand it so I just… don't."
Cruise was only 22-years-old at the time but was already a star through the movie 'Risky Business.'
But Cher – who was 38-years-old – re-united with Cruise after the pair were invited to Ronald Regan's White House with other fellow dyslexia victims.
"Then a bunch of people who were dyslexic were invited to the White House, and Tom and I are both dyslexic." she revealed.
And although the sparks didn't fly immediately the couple did later become an item.
"No, no, no, we didn't go out till way later, but there definitely was a connection there."
Cher claims that she is currently single but is still on good time with most of her former lovers.
And she remains hopeful of finding love in the future.
"I'm still on the lookout," she added.
"The problem I have with all the boyfriends lately is that I don't want to go any place with them because you can't keep a relationship going in this kind of goldfish bowl, where everything you do and every picture you have taken will be on Instagram.
"There's no way to keep something… special."
And despite the success of 'Mamma Mia 2' she admits that she was not the biggest ABBA fan.
She said: "I wasn't a big fan of ABBA in the seventies.
"Benny Andersson used the girls like instruments. Sonny used to do that to me so I never got any of my needs met that weren't what he felt they should be.
"Benny didn't give them space to sing the way they might have wanted to. And while the songs are easy to sing, they're complicated, too.
"Singing Super Trouper was really easy. But I had to do Fernando twice – I did it once and it was s***."
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