If you reject that man intentionally or unintentionally, you may not be friends in the future, because once a man secretly loves a girl and can't get the woman he loves, he will ignore her in the future for fear of being hurt. I hope you can refuse him rationally and tactfully, and let him feel that you don't like him, but want to be friends with him. I hope he can understand your heart. Give it a try! The sooner the relationship is resolved, the better. If it drags on for a long time, it will be bad for both sides!