My son is a Junior. In his first year he shared a dorm room with a guy who did not want to talk to him. Last year was in a 4 bedroom apartment on campus. They had a random roommate 1st semester then he graduated and they had another random one second semester. Neither roommate really talked to the other 3 much although the first guys GF kept the common areas clean for all of them. Last summer he was with 3 random guys.I’m not sure if he even talked to them much at all since everyone was busy.Not everyone wants to be friends with their roommates. Also a lot of guys are not the neat and tidy type. Unless it is affecting your sons ability to study and get good grades remember it could be a lot worse. For example they could be drinkers and having parties every night or one of them could be like that guy from a post last semester who had a roommate who was masturbating in front him. I would probably tell my kid to give up on being friends with the roommates, shove some of their food/pots/pan over to claim some kitchen space and seek out friends from other places.