That's Simon Curtis. After watching SNSD's performance at Letterman, Sooyoung's charms attracted him. At first he didn't even know who she was so he asked Twitter and from there on he learned Sooyoung's name and became a Sooyoungster and also a SONE. :]
But now he says that Sica now ties with his Sooyoung bias mainly 'cause Sica's sweet. :]
I was sooo happy for him when I saw that picture he posted. I'm pretty sure it was the best day of his life.