Sorry guys to say this, but I dont think Shinhye will wear anything relate to "couple thing" if she have a boyfriend... I mean.. "close friend" as a artist ^^"
Base on my experience as a fan, SH almost wear useful accessories like a black bracelet that a lot of shippers thought it was a couple thing but the true it's her hair band (just in case whenever she want to use)
And this time, that ring. I believe it's belong to... Agatha's jewelry, just for CF advertise :"D
But I think there're look like couple thing but not totally the same. Like same brand, same kind, something like that.
However, I wil remember all Darling's things, just in case discovery something special >_