Yonghwa is her ideal boyfriends. However, SM entertainment control seohyun tightly. SM management don't wanna Seohyun have relation with someone at the moment. Since Seohyun is honest and pure, her target only concentrate on work. Even she got good feeling with Yonghwa and Yonghwa's too, but I think it's not easy to make it works unless SM entertainment change attitude to their artist. Now YongSeo relations only based on MSN, SMS and phone. So now their relation classify as closed friends.