U.S. actress Angelina Jolie and Brad Pitt pose at the premiere of 'Beowulf' in London Nov. 11, 2007. (Xinhua/Reuters Photo) Photo Gallery>>>

    BEIJING, Nov. 15 (Xinhuanet) -- Sometimes on-screen romance leads to off-screen romance. Just ask Brad Pitt who hooked up with Angelina Jolie while filming "Mr. and Mrs. Smith."

    That may be why Pitt is feeling a bit edgy about Jolie's love scenes with co-star James McAvoy in her upcoming film "Wanted." In fact, Life & Style magazine says Pitt is jealous. Apparently, Pitt had difficulty watching Jolie and McAvoy share a passionate kiss.

    "Brad knows it's only a movie," a friend of the couple told L&S. "But seeing them together still stung. She hasn't done anything that erotic since 'Mr. and Mrs. Smith.'"

    To make matters worse, the magazine reports the sexiest scenes were added because Jolie wanted them. She even brought her favorite writer, Dean Georgaris, on board to beef up the interaction between the characters.

    "The changes meant she spent way more time with James, and the sexual tension got a lot more intense." The L&S insider added that the co-stars became extremely close while filming, and the further inclusion of a nude bath scene "was entirely Angelina's idea."

    (Agencies)