Seth MacFarlane has denied rumours of a romance with Charlize Theron. The news of their affair attained pace when the South African actress and the 39-year-old were recently photographed leaving a sushi restaurant together in Beverly Hills. Theron is set to star in MacFarlane’s latest film “A Million Ways to Die in the West”, and the two met to discuss the film. “(They) def aren’t dating. They are just friends. Charlize is single,” said a source. According to the Daily Express, Seth, 39, slammed romance rumours, saying: “We’re doing a movie together.”