For the genuinely romantic depictions of sex on screen, actors and directors can face a myriad of challenges. Film sets are often packed, demanding, and tiring. It's only in the last few years that a specified role to guide and coach actors for love scenes has become mainstream. Intimacy coordinator Ita O'Brien worked on Netflix's "Sex Education," as well as HBO's "Watchmen." We attended one of Ita's workshops in South London to find out how sex scenes are co-ordinated in movies.