Serena Williams, 30, was spotted in Paris with Bulgarian tennis pro Grigor Dimitrov, 20, the other day. They lunched at the au current restaurant L'Avenue, followed by a leisurely stroll through the streets of Paris where Dimitrov has an apartment.

"They were laughing and seemed to really enjoy each other’s company" a casual observer commented. "It looked like a first date."

Will things heat up between Serena and Grigor, or will it end in a straight sets defeat? We'll have to wait and see.