Who is ji sung's girlfriend?

so ji sub isn't really dating anyone currently (that's what he said, and I'm gonna take his Word for it :P) and it seems that he didn't date anyone before also..he's had some rumours about him and some of his co-stars, and i think that's why he's being cautious with female entertainers...i hope people stop making up things, because so ji sub is amazing and a great actor and i think he deserves someone really sweet!!!