The newlyweds recently left Paris and headed to the seaside town of Positano, on the Amalfi coast, where they shopped and took a boat ride before enjoying a romantic dinner on Thursday.
'They held hands and spoon-fed each other,' an onlooker told People magazine. 'Lovebirds – that's how I would describe them.'
The restaurant's owner added, 'Mrs Witherspoon [sic] ordered lemon leaf stuffed with fennel shredded fish, grilled and served with fennel, homemade cutlet pasta with ricotta cheese, buffalo ricotta cheese and pear with Aglianico wine and raw squids.
'The pair drank a very serious wine, the type that only connoisseurs would order.'