For them what they really had and shared three years ago was just purely a business, purely an act for the show and just to follow what they’re company order  them to do as an idol. 

For Seohyun, SM  management just want to test and see her effectivity on tv and to see if she can shine on her own even if she’s  not with her “unnies” (other SNSD/ Girls Generation members). And SM management were not went wrong, because she really does shine more on her own brightly and gained more confident than before.

For Yong Hwa, FNC wants him to gain more popularity for the sake of his band the CN Blue (which was just started then) and as well as for his “dongsaengs” (band mates), and no doubt really FNC management made a bright decision on putting him to that show, just look how far and famous CN Blue and s now?

In short they’re back with their old self and they were totally strangers again, as if they did not share and spent a more than a year fake relationship in one show.

After WGM, even they had a lots of encounters don’t care and mind each other’s business anymore, for they don’t have a business with each other to start with. They just keep on going with their own lives as an idol; they had extreme busy / hectic schedules, even going overseas to showcase their talents. In short, they became more popular as ever, even in overseas.  In short they’re back to their old self and they were totally strangers with each other again, as if they did not share and spent a more than a year make-believe husband and wife relationship in one show.

While everybody especially their fans hoping that YongSeo is real, but in reality YongSeo was just a show, an imaginary couple and an illusion and that’s really the painful truth.