Director Quentin Tarantino may have to do some peace-making now that his producer, Lawrence Bender, has been feuding with one of the stars of their movie, "Inglourious Basterds." Back when Tarantino was shooting the World War II epic in Germany, Bender invited ex-girlfriend Leasi Andrews to come visit with their 2-year-old daughter. "Leasi and Lawrence were broken up at the time," says a friend. But Bender is said to have disapproved when gorgeous Leasi, who has dated Leo DiCaprio and Terrence Howard, started seeing one of Tarantino's stars, Michael Fassbender. "I don't know whether Lawrence is carrying a torch for Leasi or what," says the friend, "but when he got back to Hollywood, he started dissing Michael to people around town." We won't repeat what Bender supposedly said, but a source says Fassbender and his agent, Michael Cooper, discussed suing Bender for slander. Cooper acknowledges some "initial awkwardness" between the men, but he insists there was no talk of legal action. "There's nothing but respect between Michael and Lawrence," Cooper tells us. Bender and Fassbender both plan to promote "Inglourious Basterds" at the Cannes Film Festival. Let's see who Andrews comes with.