He was 3 years your senior in high school. You used to have a crush on him. He was quite popular in school (in LA) especially in drama class. You met him once but he doesn't seem interested in you so you stay from him after that.

10 years later you bumped into him at a party organized by your friend. Since you were heartbroken because of past history, you act like you don't know him except he is the famous Japanese actor and now uprising Hollywood star.