Forget LA — sexy new couple Aaron Eckhart and Molly Sims sizzled over a steak dinner date down South. The Dark Knight actor and his model girlfriend dined on filet mignon, a porterhouse steak and tuna tartare in a corner booth at Sullivan’s Steakhouse in Baton Rouge, La., on November 4. "They were affectionate with each other all night and seemed to be having a very good time," an onlooker tells In Touch. Molly was visiting her beau in the southern city, where Aaron is filming Battle: Los Angeles.