He refused to tell my male colleague that he was on good terms. He sent me a message the next day, but I didn't reply. After a few days, I began to miss him. What should I do?

You should give up voluntarily. You know, if a man really doesn't like a woman, he really doesn't like it at all. Men are always like this. When you meet a woman you like, they will be as diligent as a dog, but when you meet a woman you don't like, they don't care at all, so it's no exaggeration to say that you have been rejected.