While we uncover secrets in the wake of one icon’s shocking death, we are still uncovering mysteries regarding another icon, who passed away over 40 years ago. In a shocking revelation from his latest memoir (not so shocking), veteran actor Tony Curtis claims that not only did he have an affair with iconic actress Marilyn Monroe, but she miscarried his child.

Curtis asserts that the affair occurred when he was married to Psycho actress Janet Leigh and Monroe was wed to playwright Arthur Miller. Starting in 1950, he says that the couple were on and off, rekindling on the set of Some Like It Hot in 1958.

“When I was in bed with Marilyn I was never sure—before, during or after—where her mind was. She was an actress. She could play a part. She could give the part what she thought a man wanted. I never asked for more,” he writes.

According to him, the miscarriage took place shortly after Monroe’s husband, Miller, found out about the romance.

Tony’s memoir, The Making of Some Like It Hot, is due in stores this October.