Cher was "crazy" for Tom Cruise when the couple dated.
The singer said her brief relationship with the actor in the 80s could have been a "great big romance" if their hectic schedules hadn't forced them apart.
Cher - who was 39 when she dated then 23-year-old Cruise - said: "I was crazy about him. He was shy. He said he felt like such a boob in school and nobody talked to him. We went on a date once for dinner in a New York restaurant and the waitress was from his old school.
"He told me she never talked to him back in school, but now he was recognised he got all her attention. It could have been a great big romance because I was crazy for him."
The affair - which is believed to have started when the pair met at a fundraising event in the White House - ended after several months when Tom met actress Mimi Rogers, who he later married.