The story goes like this. There was this guy who liked a girl in the class. Cui Wen's her name. Their maths lecturer sportingly helped him declare his love for her. Now she's popular. Is she happy? Check her blog to find out.
For NUS students, see the webcast
Update: Zhiqiang has pointed out that the video link above does not work. Sorry for that. Damn-width problem. He has uploaded the video to a new site. You can see the video at his blog.