MAN FEAST: Italian actor Luca Argentero got his Hollywood break landing the role of Giovanni in “Eat Pray Love” opposite Julia Roberts — and he doesn’t take it lightly. “It’s a gift, a dream come true,” Argentero enthused at the Gucci show Monday. And it sounds like filming was a treat. “I was in the ‘Eat’ part and feasted on pasta and Roman cuisine,” said the dapper actor, who despite the food marathon still easily fits in his slick Gucci suits. Argentero was tight-lipped about his famous co-star. “Very amiable,” is all he said.