Sheeran, flustered at first, ran about blushing (3-5)
I believe the answer is:
red-faced
Can you help me to learn more?
(Other definitions for red-faced that I've seen before include "Visibly embarrassed with ruddy complexion" , "Colourfully embarrassed" , "Embarrassed-looking" , "Rubicund" , "Visibly ashamed" .)