Cher opens up about her marriage to Sonny Bono in her new memoir, 'Cher: The Memoir, Part One.' She reveals that she'd just suffered a third miscarriage when she caught Bono cheating with his secretary.

Cher alleged in her new memoir that she caught ex-husband Sonny Bono cheating on her with his secretary around 1967, when she was suffering from her third miscarriage.

The diva was duped by Bono, who had set up a company called Cher Enterprises in which he owned 95 percent, with the other 5 percent going to his lawyer.

Even when that past involves talking about some uncomfortable topics, including the age gap between her and late ex-husband Sonny Bono. Salvatore Bono entered Cher’s life as a protector and champion,

I figured I’d plead insanity … Then I’d get a book deal and my own show,” Cher alleges Sonny told her after admitting to thinking about killing her.

Cher was 16 when she met the 27-year-old record producer Sonny Bono. She was 18 when she married Bono — her first marriage, his second — and 19 when the couple released the smash 1965 single “I Got You,