taking a break
He had no business complimenting you and it is out of line. They say in shidduch dating you shouldnt compliment her on the first few dates and even when you do dont make it too personal. Certainly in a random conversation he shouldnt be “hitting on you” as Hacham says. Fech.
You blushed because you are a good Bas Yisroel who isnt used to male attention. You should be proud of yourself.