Hello, as a fan of online literature, I can provide you with some suggestions and answers regarding online literature romance. According to the information you provided, you met a girl online and she said she liked you, and you said you liked her. However, she seems to be unhappy recently or for some other reason that we don't know. In this case, it is recommended that you first observe her emotions and behavior and learn as much as possible about her situation. If she is depressed or has other problems, you should try your best to help her and make her feel warm and caring. If she really doesn't want to continue dating, you should respect her decision and give her some space. Also, if there is any misunderstanding or conflict between you and her, you should communicate as much as possible to solve the problem. Through honest communication, you can better understand each other's thoughts and feelings and build a stronger relationship. In short, communication and understanding were very important in online romance. If you can do your best to help the other party and respect their decisions, you will definitely be able to establish a healthy and beautiful relationship.