Severus blushed the moment Lily's fingers touched his, he really didn't mind that this might not be the correct way. He just had been so worried that he had misunderstood Lily's intentions. He bit his bottom lip nervously before moving his hand closer to Lily's, making holding hands easier.
He nervously looked up through a curtain of his black hair wishing time would stand still for a bit, hoping that the annoying waitress would forget about them for a little while.