What does it mean that a girl who is having fun suddenly sends only one "I"

I feel that it is more likely that she accidentally pressed the wrong key and did not withdraw it in time. One is that she wants to express something but doesn't know where to start. Of course, the latter is more likely. Maybe she wants to say something to you, such as something hard to say, and she will be so hesitant. In this case, you'd better ask directly, it's hard to guess. Don't think too much yet! Follow your normal life path and see what happens to her next! If you are angry, it is estimated that what you think is right, otherwise it is wrong. One is that she accidentally pressed the wrong key and didn't withdraw it in time. One is that she wants to express something but doesn't know where to start. Of course, the latter is more likely. Maybe she wants to say something to you, such as something hard to say, and she will be so hesitant. In this case, you'd better ask directly, it's hard to guess.