Helen Hunt revealed she and The Sessions co-star John Hawkes remained strangers, despite having to perform intimate sex scenes for the film.
The award-winning actress has just been nominated for her second Oscar for her portrayal of a sex therapist in The Sessions, the true story of Mark O'Brien (Hawkes) a writer crippled by polio who hires a sex surrogate to lose his virginity.
Helen said: "We did zero bonding really. Before, during, or after the movie. It's funny, it's rare that I've worked with someone that I know so little, and it was a perfect dynamic for the movie.
"We got to capitalise on the fact that we didn't know each other. We were vulnerable, and strangers, exactly like in the movie."
As for being naked on screen, the 49-year-old actress just got on with it.
She said: "We decided I should be naked five minutes after coming on the screen so people could either get past that, or leave, or whatever.
"My excitement about the part was bigger than my nerves, so I did it.
"It was both scary and liberating. I don't think you get liberated unless you overcome something that's scary. But I felt so excited about giving myself the gift of spending a few weeks in the body of somebody who is positive and enthusiastic about all aspects of life, including sex."
:: The Sessions is released in cinemas on Friday January 18.