Just send it, and talk about it right away.

In this case, it is not that he has any software to help you, but that he has set special attention to you. When you send a talk or photo, his mobile phone will prompt you at the first time and ask him to give you a compliment or comment. It shows that you have a high position in this boy's heart. You are his best friend or want to be his best friend or closest person. That's why he set you up for special attention. If you say it, he will see it. Then even if he is busy, it is easy to click in and like it, which will give you a feeling of praise. In fact, he may like you through phenomena. You have to see if you give him a chance or something. I hope my answer is helpful to you.