Late screen siren Vivien Leigh's spiralling mental instability often took the form of furious sexual jealousy during her marriage to SIR Laurence Olivier, despite the fact she was having affairs herself.

The GONE WITH THE WIND star became paranoid when her former husband started filming Hamlet with teen star Jean Simmons in 1947, as she was wrongly convinced he was enjoying an illicit love tryst with her, according to TERRY COLEMAN's sensational new book LAURENCE OLIVIER, THE AUTHORISED BIOGRAPHY.

She wrote to a pal, "Goddam Larry is f**king his Ophelia and I'm losing him to a child."

Leigh and Olivier's 20 year marriage ended in 1960, seven years before Leigh died from chronic tuberculosis (07JUL67).