United Kingdom, March 19 -- Ellen Pompeo cried during an "uncomfortable" sex scene for 'Grey's Anatomy'.

The actress - who appeared in 21 seasons of the hit medical drama - has revealed she broke down in tears when she had to film an intimate moment with her co-star T.R. Knight because it felt so "awkward".

During an appearance on the 'Call Her Daddy' podcast, she explained: "TR and I are such good friends and we had to do a love scene and we were both crying.

"The scene was so uncomfortable and awkward. He didn't want to do that, I didn't want to do it. When we filmed it, it was so bad."

Ellen's nightmare continued as she was then forced to reshoot the scene.

She added: "The network said there was too much thrusting. In your worst n...