What is he makes me blush?

As an AI language model, I cannot provide information on personal experiences or specific individuals' behavior. However, I can give some general information about blushing. Blushing is typically a physical manifestation of one's emotional state, often indicating embarrassment, shyness, nervousness, or attraction. It occurs when the blood vessels near the surface of the skin dilate, causing an extra flow of blood to the face, neck, and other areas of the body. Blushing may also be triggered by environmental factors such as heat or excitement.