With my girlfriend. What can I do if I have nothing to do?

This question should be discussed with your girlfriend to see what her hobbies are, and then find out what you have in common or similar hobbies to do. Otherwise, it will be difficult for a person not to like sports. For example, you won't like it if she comes out to exercise. If you can't find a common hobby, I suggest you take this opportunity to exercise your weaknesses. For example, you don't like sports, and now you are going to exercise specifically for your girlfriend. This will build a very meaningful sport that you will never forget, because it will be meaningful to do things with people you love, even if you don't like them. For example, when we first fell in love, we often went to the Che Jian River to play. Now we can recall the sweetness when we smell the sewer. This is a wonderful memory. Can't try. In this case, it is meaningful to do whatever you want, whether staying at home or learning chess.

As for what others do, don't worry. What they do may not be suitable for you or meaningful. It makes more sense to try to do something by yourself.