How can he get to know you and like you again?

First, you can't just tell him that you like him, because then he will not cherish it (for future consideration)

Second, you can guess whether you like someone or not, and then say that you are willing to help them fix them up.

1). If it is confirmed that he likes that girl, then you can go directly to that girl and tell her the situation. If she likes it, you can really fix them up. After all, people are lovers and both parties like them. If you really like someone, you want him to be happy.

2). If that girl doesn't like him, then you can help him chase girls and get close to him, so you have a better chance. Love for a long time is the golden rule!

3). If he says he doesn't like this girl, you approach him on the grounds that he refuses to admit it and you insist on introducing her.

Of course, all of the above needs to be from the heart. You really love someone to make him fall in love with you.