SOS
As Moby listen carefully to Ray's words, he found a big contradiction, and in addition to his shaky smile, he began to doubt his words. He was not at all acting natural, nothing at all like the Ray he remembered.
He said that he got inspired and began to work hard right after he said that all he did during the break was play video games, those two statements don't add up.
He felt like Ray was trapped, inwardly crying for help trying to give them hints without making it obvious for some reason. He was almost certain something else was going on but he had no solid evidence to confront him with, plus that would be a reckless move in his circumstances.
If Ray suddenly jumped up in the research rankings, it would be very odd for a gang not to be interested in him. Gangs usually only invite very talented people while the weaker students usually beg them to join for protection.