Pattinson doesn`t understand girls, says Ashley Greene

London: British actor Robert Pattinson finds it difficult when it comes to understanding girls, says his "Twilight" co-star Ashley Greene.

Greene asserted that the heartthrob who first found fame playing Cedric Diggory in "Harry Potter and the Goblet of Fire" is constantly bemused by the attention he receives from women, reported a news website. "He doesn`t understand girls. He gets a lot of attention from them, but he doesn`t quite understand it because before `Twilight` he was just a guy from `Harry Potter`," she said. Asked if she never had a crush on Pattinson, she said: "When I met Rob, I didn`t think twice about him. He`s really attractive, but that chemistry wasn`t there." IANS