Girls tell boys how to keep friends when they are dizzy.

Consider it a joke on him. If you don't mind, your heart will be relaxed and it will be much more comfortable to be friends with him in the future. You still have to joke with him as before and treat him as a friend from the bottom of your heart, so that he can rest assured. He may have hallucinations when he sees you as if nothing has happened, hehe! The boy doesn't seem to care much about this. He replied that you were "dizzy", probably because you were surprised, maybe because he always regarded you as a friend and didn't expect you to have a good impression on him. Don't worry too much, just consider it an expression of your feelings for him.