After three Twilights, Bella Swan is still a virgin. Which is one more virgin than you can expect to find in Robert Pattinson's forthcoming, sex-filled period piece Bel Ami, co-starring Uma Thurman."It's about a character called Georges Duroy, who is a broke ex-soldier in Paris in 1890. Basically, he has no drive. He's just jealous of everything. I quite liked the story," Pattinson says, descri…