By Phoebe Tonks Love Island’s Demi Jones and Luis Morrison gave fans a surprise update on their relationship as they returned to the villa. As Love Island : All Stars wrapped up on Monday night, viewers were thrilled to find out that Demi and Luis are still going strong, four weeks after leaving the show! Luis, 29, from series 1, and Demi, 25, from series 6, hit it off shortly after entering the villa, even sharing a few romantic kisses. Despite their obvious connection in the villa, they hadn’t officially become a couple. Demi was paired with Chris Taylor from day one, while Luis was explorin…