British actress Rosamund Pike, who will be seen in upcoming thriller "Gone Girl", says shooting for sex scenes with Neil Patrick Harris was "inappropriate".

The film also stars Ben Affleck. According to Glamour magazine, the actress who plays Amy Dunne, in an adaptation of Gillian Flynn's bestselling novel of the same name, was thrilled to work with her seasoned co-stars, but when it came to filming the steamy scenes, things got a little awkward, reports foxnews.com.

"Neil (Patrick Harris, who plays Amy's obsessed ex, Desi) was incredible at that. We were in hysterics in the editing room. It was very funny doing (rehearsals for our sex) scene," Pike said.

"(Neil and I were left alone) on that set for like two hours to make sure we could do it. But when it's just two of you, basically kind of f***ing on a bed, it feels so inappropriate," she added.