When I was in Seoul earlier this year my friend whos works for a production company said Yuri was involved with some actress that's kinda popular but I can't remember her name. I believe it. It was group of us talking and they all say they heard about it too and taeyeon hates Jessica(apparently I'm super late on this) because Jessica thinks she's better than tae in every way(singing,looks,dancing,and should be the leader)so she did something really bad to taeyeon and taeyeon is never going to forgive her even tho jess is sorry.