As reported by the San Francisco Chronicle, there will now be a movie based on the incredible life of Cheryl Cohen Greene, sex surrogate and therapist from Berkeley, California.

In a career spanning over 38 years, Ms Greene has dealt with a diverse clientele, including single and married men, couples, the elderly, and the physically disabled, the broadsheet informs, revealing that forthcoming movie 'The Surrogate' is based on Ms Greene's lifelong friendship with poet and scribe Mark O'Brien who had polio in his childhood and could not have sex until he turned 36.

Mark O'Brien spent the major part of his life on a negative pressure ventilator, known as 'iron lung' in common parlance. At the age of 36 he approached Cheryl Cohen Greene to become his partner and they struck a chord after that until the demise of O'Brien in 1999, notes the San Francisco Chronicle.

To be premiered on January 23 in Utah, 'The Surrogate' stars Helen Hunt and John Hawkes in the leading roles, the newspaper says, disclosing that it is a screen adaptation of a Sun Magazine article written by O'Brien himself in 1990, titled 'On Seeing a Sex Surrogate'.

The source learns that the 67-year-old sexologist from Berkeley took time out from her busy schedule to be present at the set in Santa Monica for a week and she might also be attending the world premier.

Sexual surrogacy is not a rare career path in the West. Earlier 121doc reported the story of Padma Deva, a 31-year-old sex therapist from London, who engages in sexual intercourse with her male clients suffering from erectile dysfunction or other sexual health issues.