OP's Youtube Channel:
I think he's the short Asian in video? And OP is this is you... I'm gonna assume you're in second year now (since the project was for a 100-level Chinese course) and your girlfriend is the same age. In which case, she's probably into some serious clubbing and not a "real" dancer but likes to dance. So she actually might be trying to find other guys, or is just an attention whore.
Anyways.... go find someone new. And umm... this is a shitty video... BTW is she one of the girls in the video?
And I think this is what the OP looks like if this is his photo:
http://steamcommunity.com/id/HuangYiChao
I dunno why I did that. Hrm... But your name returns alot in Google Search?? Anyways, lose the Asian bed-head hairstyle and get a girl that respects you properly.