Amanda Seyfried insists filming sex scenes for 'Lovelace' were a ''piece of cake'' compared to her erotic role in 'Chloe'.

The 27-year-old actress portrays porn star Linda Lovelace - who shot to fame after appearing in iconic 70s adult movie 'Deep Throat' - and had to shoot a number of sexual sequences with her co-star Peter Sarsgaard, who plays Linda's abusive husband Chuck Traynor.

However, Seyfried says they were made easy by Sarsgaard, and she had much more difficulty shooting erotic scenes in 2009's 'Chloe' - in which her prostitute character Chloe Sweeney has lesbian sex with Julianne Moore's Dr. Catherine Stewart.

Amanda told Bang Showbiz: ''It wasn't really something I felt that closed about. I did a film called 'Chloe' and that was pretty graphic compared to this. 'Lovelace' really seemed like a piece of cake. I think it's because the scenes in 'Lovelace' I was doing with Peter - I felt really comfortable and I trusted him.''

Sarsgaard previously admitted he also felt ''safe'' while filming intimate scenes with the blonde beauty in the biopic.

The 42-year-old actor said: ''It's always nice to act with someone you know it's going to be safe.''