I guess the YGE bond is quite strong: Se7en's girlfriend, Park Han Byul, and Sandara Park have revealed that they are close friends! The two are actually the same age and have kooky personalities. I'm sure Se7en introduced the two but they seem like more than just acquaintances. Their faces are pretty hilarious, right? The caption reads

With my friend, Han Byul~! ^^ I have few friends in Korea but Han Byul is one of them! We are the same age and born in the same month. We're both easy going~ Ha, 1984's Fighting! ^.^