SO that back and forth goes on and they exchange no.s but obvii yeo won doesn't know earthstar and ji gu are the same person so he saves his no as business partner and then he starts realising that earthstar and ji gu use the same cat emoticons but he only finds it cute when ji gu does it. One day, he was going to sneak up on ji gu as he was messaging earth star, but then earth star starts spamming emojis and yeo won was behind ji gu and saw that well- HE was earthstar, so bro pulls his hair and all that, saying that if he knew for a year, why didn't he tell him blah blah blah. But finally, when they get together them going to have s** is so awkward as there are many times when they weren't able to go thru with it but it happens at the end and yeahhh, that's it. Hope you understood lovee <3
