The Woman JW Has On Speed Dial

Lee Ji Hyun...she's the woman Joo Won has on speed dial. And yes, she is his ex (I thought it was pretty obvious in Episode 8, when 
Ra Him told her JW's mom tried to paid her off).

Oh, and if you are wondering about their age gap, there's none. They are of the same age in the show. Used to be lovers, but now maintains a cool relationship. There's nothing she doesn't know about him and she'll be the first to find out about the soul swap.Edited post airing


Holey mackerel, someone finally finds out! That totally changes things, doesn't it? 


Via isplus (exerpt from the interview), Baidu (chinese translation)