Well, it's not your excuse. I know that quite a lot of Chinese student prefer to study with their counterparts. This is a perfect way to help your study. However the counterparts that are not Chinese doesn't make sense. You can find another one and discuss with them. I know that many American students are very hard working and they are also very nice. If you can discuss with them, you can get your GPA back as well as enhance your English. In the mean while, you should put more attention on your study. Your future is dominated by yourself, if you don't take it seriously, no one can in the world can help you. Take a rest and set off.
