By Joel Leaver Luis Morrison has opened up about his relationship with Demi Jones following the news that they have parted ways less than two months since they left Love Island: All Stars. The former islanders grew close on the ITV2 spin-off show earlier this year but weren’t coupled-up whilst in the villa. Luis, 27, and Demi, 25, however briefly dated when they returned to the UK from South Africa after being dumped from the villa together just over a week into the series. It was reported last week that there’s no longer a romance between them though. And following the news, the Mirror caught…