Actress Demi Moore, 61, was spotted in a photo enjoying lunch with a much younger celebrity, who, like her, is also single. The unexpected pairing hinted at potential romance but left netizens divided. Demi Moore and singer Joe Jonas, 34, were seen together at the Hotel du Cap-Eden-Roc in Antibes, France last May. The pair were spotted having lunch, both smiling and enjoying each other’s company. Moore wore a black shirt topped with a gray sweater, dark sunglasses, and carrying a purse along with her tiny dog. Jonas donned a cream-colored buttoned-up shirt and sunglasses. They were accompanied…