A girl replies to your message very slowly, or even doesn't reply. You sent her a short video without asking. Is it necessary for this kind of girl to chase?

I think most people don't want to chat with you, but they are not interested in you. If I don't reply to you this time, there is nothing that she may be too busy to see. If this happens frequently, you have to think about it. It's basically impossible. You must impress her with your behavior. If I ignore you several times, I don't think such a girl needs to chase you, because she doesn't care about you at all. If she really likes you, you send him a message and she will call you back immediately. If she doesn't answer you anything, it means that you have no place in his heart, so don't waste your time on him.