The actress-and-singer had to film a racy love sequence for new movie `The Back-Up Plan` - in which she plays a woman who is desperate to get pregnant - but banned Marc Anthony from the set on the day of the steamy shoot. She said: "I didn`t want to torture the poor guy. He shouldn`t be watching when I`m seducing another man on a kitchen table. Personally I don`t like doing love scenes at all, because they make me feel uncomfortable." Although she didn`t want Marc to see her getting it on with another man in `The Back-Up Plan`, Jennifer wasn`t too nervous about baring her body on-screen because she is so pleased with her post-pregnancy figure. The 40-year-old star - who has two-year-old twins Max and Emme with Marc - didn`t go on any fad diets to shift the weight and simply relied on discipline and exercise. She told website Gala.de: "I worked out a lot. I struggled to get rid of the last 20 pounds. I had to change my eating habits after having the twins. I eat a lot less now than I used to. But I love bread and you▓re not allowed bread with most diets."