As Greg continued to speak, Loki distanced himself from the troublemaker. He wanted the distance between them partly so that any hatred and trouble because of the words that Greg said would all be directed at Greg.
He didn't want to be in the splash zone of any trouble. But the main reason he didn't want to be this close to Greg was that he wanted to be able to see any suspicious move from Greg from afar.
He didn't want to be too close to dodge or block an attack from Greg. He didn't want to be caught off guard like last time, so he kept his distance and kept an eye on Greg.
Greg saw his behavior but didn't mind it. He only thought that this was another effect of Loki's unexpected and unexplained dislike for him.
He didn't mind that Loki didn't like him because many people don't like him. He just found Loki's dislike as soon as they met, somewhat unexplained.
