I don't get how he thought that dating would break the group up but fighting and telling a 'friend' that they're just teammates isn't?
Its true that dating is a huge issue among group members there have been quite a few bands that disbanded because of internal conflicts after breakups, but it really was hurtful thing to say to a friend... Even tho I am sure that isn't what he really feels, it's how he thinks it's supposed to be in order to avoid disbanding
If someone told me, "don't be petty", I'd double the fuck down, especially when the person saying that has so idea what the full situation is AND is just a classmate, like be fr, who do you think you are to butt in and scold me